Martin O'Neill sees the Republic of Ireland's friendly against Turkey as key in their preparations for the UEFA Euro 2016 qualifiers.
The two meet in Dublin on Sunday as both countries look to the future after failing to qualify for the FIFA World Cup finals in Brazil.
The visit of Fatih Terim's Turkey marks O'Neill's fourth match in charge, having taken the job in November last year.
So far, the former Sunderland and Aston Villa boss has overseen one win, one draw and a defeat - all in friendlies - and will be looking to improve on that record.
After the clash with Turkey, Ireland take on Italy at Craven Cottage on May 31, before travelling to the United States for matches with Costa Rica and Portugal.
"I am looking forward to working with the players over the coming weeks, which will be important as we work towards our opening qualification matches in September," O'Neill said at the unveiling of his squad.
"The matches will be about getting to know the players better and changing them around a little bit in terms of personnel in different matches."
O'Neill included two uncapped players in his 29-strong party, with Everton's Shane Duffy and Newcastle United's Rob Elliot hoping to make their international debuts, the latter having missed his own pre-wedding celebrations to join up with the squad.
Like Ireland, Turkey fell short of World Cup qualification, finishing fourth in Group D, three points behind second-placed Romania, who clinched a play-off spot.
Terim's men warmed up for the weekend's game by thumping minnows Kosovo 6-1 on Wednesday, with the experienced coach opting for a youthful line-up in Mitrovica.
Mustafa Pektemek scored twice in that win, while the pacey Ahmet Ilhan Ozek impressed down the right-hand side, and both will be pushing to be included against Ireland.
The experienced trio of Nuri Sahin, Selcuk Inan and Burak Yilmaz were all named in Terim's squad, but it remains to be seen whether they will feature, while 72-cap Arda Turan has the UEFA Champions League final for Atletico Madrid 24 hours earlier and will join up with the squad at a later date.
Turkey have been drawn in Group A for Euro 2016 qualification, along with the Netherlands and Czech Republic, but with third place now being good enough to earn a play-off spot for an expanded tournament, Terim and his squad will feel confident of beating the likes of Iceland, Kazakhstan and Latvia to secure a top-three finish.
|Coach: M. O'Neill|
for D. Delaney 66'
for S. Long 66'
for A. McGeady 66'
for G. Whelan 82'
for S. İnan 21'
for B. Kisa 46'
for H. Çalhanoğlu 63'
for A. Özek 70'
for M. Erdinç 82'
for N. Şahin 84'
|Schweinsteiger set for return to Germany training|
|Pato: I expected more games at Chelsea|
|Real Madrid may go for Pogba - Perez|
|World Cup Qualifying Review: New Zealand march on|
|Carvajal furious at missing Euro 2016|
|Mkhitaryan in no rush to sign Borussia Dortmund renewal|
|Pele to auction off memorabilia|
|Reus left out of Germany´s Euro 2016 squad|
|Blind determined to fight for his place under Mourinho|
|Aulas open to PSG bid for Lacazette|
|Giroud does not understand France booing|
|Four places up for grabs as Del Bosque closes on final Spain squad|
|Messi tax trial begins in Barcelona|
|Hart: England can be surprise package at Euro 2016|
|Ancelotti will not push out Gotze - Khedira|
|Ibrahimovic hints at Malmo return|
|Depay not blaming Van Gaal for his Manchester United struggles|
|Deschamps unhappy with ´unfair´ Giroud boos|
|Juventus adamant no Olympics for Dybala|
|Navas ruled out of Copa America|
|Iniesta: Madrid will be disappointed not to win La Liga|
|Messi on track in recovery|
|Morata: I want to succeed at Madrid, but would consider Premier League|
|Lewandowski headlines expected Poland squad|
|France boss Deschamps ´surprised´ by Cameroon performance|
|Payet: I´m expected to score every free-kick now|
|Bashful Rami admits to mistakes against Cameroon|
|Peseiro to leave Porto|
|France 3 Cameroon 2: Payet stunner snatches victory|
|Laxalt for Rodriguez in Uruguay´s Copa squad|
|Guingamp unveil Kombouare as new head coach|
|Real Madrid confirm Achilles problem for Navas|
|Wilmots´ woes worsen as Belgium lose Lombaerts, Boyata|
|Marotta: Juventus optimistic on Dani Alves deal|
|Berlusconi: I courted Guardiola at Barcelona|
|Berlusconi: Donnarumma not for sale, even for €80m|
|Ginola back at home following heart surgery|
|Departing City boss Pellegrini could quit management|
|Ayestaran prepared to fight to keep Gomes at Valencia|
|Sagna hopes to remain at City under Guardiola|
|France 3-2 Cameroon: Payet nets dramatic late winner for Euro 2016 hosts|
|Roma complete permanent Rudiger deal|
|Senderos left out of final Switzerland squad for Euro 2016|
|AFC Wimbledon 2 Plymouth Argyle 0: Dons reach the third tier|
|Spain v South Korea: Pedro wants goalscoring momentum|
|Reus demands Dortmund transfers|
|Poland v Netherlands: Lewandowski out to make the most of set pieces|
|Low still waiting on Germany fitness news|
|Juanfran promises Champions League success in heartfelt letter to fans|
|Skriniar joins Skrtel, Hamsik in Slovakia squad|
|Scholl: Gotze and Lewandowski dealings strange|
|Terry: Chelsea must learn from mistakes and fight for trophies again|
|Belgium v Finland: Hazard backs squad to cope without Kompany|
|Injury comeback on track, says Germany´s Khedira|
|Victor Sanchez sacked by Depor|
|Rashford signs Manchester United renewal|
|Sturridge resumes England training|
|Pellegrini rues decision to go public with Guardiola appointment|
|Luxembourg v Nigeria: Yusuf set for latest audition|
|Icardi, Perisic not for sale at any price - Inter|
|Carvajal to miss Euro 2016, replaced by Bellerin|
|Terry certain of Mourinho success at Manchester United|
|Pirlo not bitter towards Conte over Euro 2016 snub|
|Dortmund rule out Sokratis exit amid Atletico Madrid links|
|Barcelona revert to tradition with new kit|
|Robben and Ribery in line for Bayern renewals|
|King backs Wales to ´do a Leicester´ at Euro 2016|
|Deschamps: Zidane´s Champions League win is amazing|
|Pulido rescued by Mexican authorities|
|Alaves secure La Liga promotion|
|Gabriel´s childhood dream becomes a reality|
|Mexico v Chile: Vidal set for return|
|Boateng left ´sad´ after politician´s controversial comments|
|Mooy undecided on future|
|Gotze not concentrated on club future|
|Panama 0 Brazil 2: Jonas breaks goalscoring drought, Gabriel nets on debut|
|Postecoglou pleased with additions ahead of Greece clashes|
|Panama 0-2 Brazil: Jonas breaks goalscoring drought, Gabriel nets on debut|
|Ter Stegen laments ´unlucky´ error in Germany defeat|
|Santos hoping for Portugal improvement ahead of Euro 2016|
|Ronaldo dismisses critics after Champions League win|
|Uruguayan side complete Leicester-style championship win|
|New York City 2 Orlando City 2: Molino salvages late point|
|Colombia 3 Haiti 1: Cuadrado helps Pekerman´s side to win|
|Strachan hits out at wayward passing|
|Conte focusing on positives after Scotland victory|
|Colombia 3-1 Haiti: Cuadrado helps Pekerman's side to win|
|Portugal 3 Norway 0: Quaresma, Guerreiro light up Porto|
|Italy 1 Scotland 0: Pelle halts winless run|
|Bellerin in line to replace Carvajal - Del Bosque|
|Nolito dreaming of Euro 2016 after Spain double|
|Olympiacos striker Pulido kidnapped in Mexico - reports|
|Low concerned by Germany´s defensive performance|
|Portugal 3-0 Norway: No Ronaldo, no problem for dominant hosts|
|Deschamps will not consider Sakho recall|
|Germany 1 Slovakia 3: World champions continue to struggle|
|Italy 1-0 Scotland: Pelle strike settles tense friendly|
|Spain 3 Bosnia-Herzegovina 1: Nolito, Pedro on target|
|Martial set to miss France friendly through injury|
|Everton standards not what they should be - Coleman|
|Barnsley 3 Millwall 1: Hammill scorcher helps seal Championship return|
|Spain 3-1 Bosnia: Nolito fires La Roja to success|
|Emerson warns Morata against Real Madrid return|
|Germany 1-3 Slovakia: Hosts shocked in rain-affected friendly|
|Tiago has ´no doubt´ over Simeone´s Atletico future|
|Ben Arfa wants to match Messi, Ronaldo|
|Portugal v Norway Preview: Quaresma challenges hosts to prove Euro 2016 ambition|
|Republic of Ireland v Belarus: Coleman inspired by Leicester heroics|
|Bayern defend Boateng after politician´s insult|
|Too risky for England to start Stones at Euro 2016 - Campbell|
|Republic of Ireland v Belarus: Coleman inspired by Leicester heroics|
|Champions League Final: Could the Madrid derby rival El Clasico?|
|Mourinho gives Manchester United the X Factor they need, says Lampard|
|World Cup Qualifying Review: Tahiti thrash Samoa|
|Ballack: Schweinsteiger indispensable for Germany|
|Dortmund dismiss Aubameyang exit talk|
|Mourinho is really irritating, says Keane|
|Isco: I´ll stay if Real Madrid want me|
|Zieler close to Leicester move as Hannover confirm medical|
|Messi on the mend, say Argentina|
|´Deschamps should be flattered - Ryan Gosling is a Mormon´ – Cantona explains France boss criticism|
|Xhaka proud to complete ´dream´ Arsenal move|
|Conte concerned by De Rossi injury|
|Pepe hails Zidane influence after ´tough six months´ under Benitez|
|Hull City´s top-flight return comes at a cost for fans|
|Koeman: United don´t deserve FA Cup trophy after sacking Van Gaal|
|Ramos hails Zidane for turning Madrid around|
|Nobody expected this trophy – Arbeloa|
|MLS Review: Drogba scores late, Wright-Phillips nets treble|
|Benzema wants Madrid stay after Champions League win|
|Koke: I think Simeone will stay at Atletico|
|United States 4 Bolivia 0: Zardes scores brace as Pulisic opens account|
|Champions League final: A bomb scare, Clarence Seedorf and Ronaldo strips off again|
|United States 4-0 Bolivia: Zardes scores brace as Pulisic opens account|
|Saul: Atletico don´t deserve second heartbreak|
|Real Madrid players revel in Champions League success|
|Davies: Tottenham joked Pochettino was joining United|
|Gabi: I am convinced Atletico will win the Champions League|
|Mexico 1 Paraguay 0: Guardado extends unbeaten streak|
|Simeone to ´think about´ Atletico future|
|Zidane: I dreamed this would happen after getting Real Madrid job|
|Ronaldo ´had a vision´ he would score San Siro winner|
|James wants Real Madrid stay despite Champions League final snub|
|Real Madrid success an amazing journey, says Bale|
|Simeone rues Atletico ´failure´|
|Sterling tips Rashford for long England career|
|Navas hails Champions League triumph as ´dream come true´|
|Champions League trophy belongs to Real Madrid - Modric|
|Perez hails Zidane after dramatic Champions League win|
|Bale the main man for Madrid, and the rest of the Champions League final player ratings|
|Ronaldo: Real Madrid experience made the difference|
|Ronaldo gamble eventually pays off for Madrid|
|Griezmann´s penalty miss & Ronaldo´s nerves of steel - The key moments that decided the Champions Le|