New Zenit coach Andre Villas-Boas said taking on the job was a no-brainer due to the club's standing in European football.
Former Porto, Chelsea and Tottenham boss Villas-Boas was unveiled to the media on Thursday, following Zenit's exit from the UEFA Champions League a day earlier.
The Russian Premier League giants defeated Borussia Dortmund 2-1 in Germany on Wednesday but were still eliminated on aggregate 5-4.
It was a spirited display though, and Villas-Boas – who will be immediately tasked with winning the league – says it was an easy decision for him to make.
He told a news conference: "I've been very well received by all the people I've met in St. Petersburg.
"To be honest, there was no difficulty in taking this decision for me, because Zenit is a well-known club in Europe.
"The ideas that led to this decision suit my own ideas about football. This is an important step for me, that suits my ideas, and my career.
"Of course I knew a lot of Zenit's players before I came here. I'll learn more about them in the process of my work."
Villas-Boas confirmed that interim coach Sergey Semak would remain at the club, as part of the first-team staff.
Zenit have won just one of their last seven league matches, form that saw former coach Luciano Spalletti sacked.
They have dropped to second in the table but encouragingly, are just three points behind leaders Lokomotiv Moscow.
Spartak Moscow, Dinamo Moscow and CSKA Moscow are all within four points of Zenit though, meaning the race for the title will be hotly contested.
"If we win all nine remaining matches, Zenit will be champion," Villas-Boas added.
"My goal is to bring Zenit to the top."
The 36-year-old also said he was pleased with the signs he saw from Zenit in Wednesday's triumph at Signal-Iduna Park.
"Last night's game was an excellent result for sure," he continued.
"The main thing is that Zenit played as a team. I saw the team's spirit."
|Bundesliga: Borussia Dortmund season review - Klopp endures rocky farewell|
|Adler ´aged three years´, Labbadia ´extremely proud´ of Hamburg|
|Colombia squad settles in Argentina|
|Balotelli ´a target´ because of Liverpool form - Richards|
|Bosnich: If I´d listened to Terry I would have avoided drugs|
|Luiz Gustavo ruled out of Brazil´s Copa America squad|
|Mexico confirm Copa squad|
|Pogba ´very happy´ at Juve|
|Pogba can be Europe´s greatest - Pirlo|
|Pinedo stays in Argentina, Bolivia captain Raldes in Copa America squad|
|Quinteros cuts Banguera, Hidalgo for Chile showpiece|
|Injured Gonzalez misses Copa America, Venezuela finalise youthful squad|
|Champions League Final: Buffon plays down Juve hopes, Iniesta doubtful|
|Karlsruher 1 Hamburg 2 (2-3 agg): Muller strike ensures survival|
|CONCACAF official Sanz banned by FIFA|
|Gourvennec shuns admirers with Guingamp extension|
|Pastore signs PSG extension|
|Morel swaps Marseille for Lyon|
|Watford sign Austria defender Prodl|
|Monaco confirm Berbatov departure|
|Peru v Mexico: Herrera confident as Copa preparations continue|
|Injury rules Dost out of Netherlands friendlies|
|Koeman must strengthen attack for Europa League challenge - McMenemy|
|Wilshere apologises for Spurs taunts|
|Marchisio: No fear ahead of Barcelona clash|
|Klopp to take break after leaving Dortmund|
|Champions League win would be ´more than extraordinary´ - Allegri|
|Charity calls for education after Leicester ´racist orgy´ claims|
|Taylor agrees Swansea deal|
|Sevilla snare Krohn-Dehli|
|Coloccini hails Gutierrez after ´perfect´ Newcastle finale|
|Benitez excited by Madrid opportunity|
|Sampaoli confirms final Chile squad for Copa America|
|Clement ready to go it alone at Derby|
|Mihajlovic confirms Sampdoria exit|
|Brentford turn to Dijkhuizen|
|Usami, Moto to lead Japan qualifying threat|
|Vieira ´the best bet´ for Newcastle - Bernard|
|´We´ll see what happens with my future´ - De Gea|
|Klinsmann: Guzan will start at Gold Cup|
|Alves wants Barca extension not PSG - Blanc|
|Derby appoint Paul Clement as head coach|
|Karlsruher ´can only win´ - Kauczinski|
|Ronaldinho causes stir with disallowed goal|
|Szczesny plans Arsenal stay|
|Pioli: Lazio deserve Champions League qualification|
|Pablo Aimar makes River Plate return|
|MLS Review: Seattle leave it late against Red Bulls|
|Wenger: Arsenal won´t spend big|
|Police to investigate Rangers-Motherwell fight|
|´I will definitely stay´ at City - Toure|
|Champagne backs Blatter to reform FIFA|
|Honduras 2 El Salvador 0: Penalty, goal and red card to Lozano|
|Mancini wants Icardi to stay|
|Sampdoria set to speak on Mihajlovic future|
|Serie A Review: Napoli miss Champions League in Benitez send-off|
|O´Neill: Fitness of players will determine selection against Romania|
|Inter 4 Empoli 3: Icardi brace secures victory|
|Northern Ireland 1 Qatar 1: Irish cough up lead|
|Eredivisie Review: Five-star Vitesse seal Europa berth, NAC Breda relegated|
|Motherwell 3 Rangers 0 (6-1 agg): Miserable return for McCall|
|Wilshere taunts Spurs during FA Cup parade|
|Di Francesco pens Sassuolo extension|
|Klopp thanks Dortmund for emotional farewell|
|Italy call up uncapped duo|
|Walcott expects Arsenal deal|
|Luiz dreaming of Champions League glory|
|Leicester trio issue apology as club investigate alleged ´racist orgy´|
|Gerrard ´a dream to play with´, says Sturridge|
|Clasie a target if Schneiderlin leaves - Koeman|
|Muller appears to pledge future to Bayern in Instagram post|
|Sheikh Mansour wants Toure at City - agent|
|Real vice-president inadvertently ´confirms´ Benitez appointment|
|Pique targeting Barca ´perfection´|
|Malanda helped us a lot - De Bruyne|
|Falcao not focused on transfer speculation|
|Iniesta in doubt for Champions League final|
|Blanc hoping for FFP boost|
|Willian, Filipe Luis, Cuadrado to miss Premier League start|
|Mourinho: Chelsea not playing Sydney ´for fun´|
|MLS Review: Shipp sinks Montreal, Giovinco stars for Toronto|
|Luis Enrique targets ´exemplary treble´, basks in Messi´s magic|
|Iraola: Neymar ´rainbow´ unsporting|
|Mexico 3 Guatemala 0: Herrera brace ensures farewell victory|
|´I´m not going to change the way I play´ - Neymar|
|PSG motivated by historic opportunity - Douchez|
|Wenger hopes Wembley win convinces Walcott to stay|
|Klopp refuses to dwell on departure after cup heartbreak|