Portugal coach Paulo Bento said Cristiano Ronaldo, Raul Meireles and Pepe could feature in Tuesday's friendly with the Republic of Ireland.
The trio all returned to the training track from injury recently, in the race to be fit for Portugal's FIFA World Cup opener against Germany in Salvador on June 16.
Ronaldo (knee), Meireles (thigh) and Pepe (left leg) have all brought niggles with them to Brazil, but they took one big step in their respective recoveries by undergoing training on Monday.
A week out from their Group G curtain raiser, Bento said he will assess how they pull up when deciding whether they feature for the New Jersey friendly.
"Regarding the fitness of Cristiano Ronaldo, Raul Meireles and Pepe, the first two trained on Saturday and Sunday and Pepe trained today," Bento said on Monday.
"Their situation will depend on what their response is to this training. We will see what our decision will be for tomorrow's match against Ireland.
"Of course it's difficult to train without the full squad, it will all depend on how they feel before the match against Germany and of course it's always difficult to prepare for such a big match without all the squad there, able and fit."
Bento said he was not looking past their group fixtures with the Germans, USA and Ghana, despite the Portuguese side advancing into the knockout rounds at the past two World Cups.
"Our first objective is to go through the group stage, to the knockout phase," he said.
"Before thinking about the knockout phase we will have to focus on that first objective which will be to achieve and pass through the group stage.
"From then, we will try to compete against any opponent we will face and try to progress and go as far as possible."
|11||J. McClean||52' 56'|
|Coach: M. O'Neill|
for W. Hoolahan 63'
for J. Walters 63'
for J. McClean 67'
for S. Ward 67'
for A. McGeady 75'
for S. Kelly 75'
|Was Juventus´ new logo inspired by tennis star?|
|Smooth sailing for Liverpool in Plymouth? Klopp expects tough test|
|Demichelis re-joins Malaga until end of season|
|Cameroon v Guinea-Bissau: Broos urges new heroes to emerge|
|Boxing champ hits Carragher with Chinese Super League comeback prank|
|Zidane backs Navas and defends Benzema as Madrid aim to bounce back|
|Deportivo bring in Kakuta from Hebei after CSL rule changes|
|Matip could miss eight games without doing anything wrong - Klopp|
|United trigger Valencia´s contract extension|
|Ronaldo returns to Real Madrid´s Copa squad|
|FA fine Sagna for Instagram post|
|Nedved does not foresee more January business for Juventus|
|Rafinha injury blow for Barcelona|
|Villas-Boas fumes at CSL foreign player crackdown|
|Ibrahimovic invaluable to Manchester United youngsters - Rashford|
|Robben rejected China move|
|A-League review: Phoenix rise to the occasion to end Victory´s streak|
|Van Gaal slams English media over treatment at Manchester United|
|Mignolet: Liverpool in better position to win title than in 2013-14|
|Giroud wants Premier League title but understands China temptations|
|Tianjin forced to scrap moves for Costa, Benzema, Cavani and Falcao|
|My goal was better than Mkhitaryan´s - Giroud|
|Pochettino not interested in Argentina job|
|Kane: Tottenham can win Premier League|
|Corinthians dreaming of Drogba - Paulo Roberto|
|Coutinho calls for Liverpool focus|
|Chiellini compares Pogba to LeBron and Bolt|
|Maradona to become Napoli ambassador|
|Mihajlovic furious after Torino collapse|
|Icardi has offers from China - Wanda Nara|
|Pogba can cope with pressure - Ibrahimovic|
|´My half-time words will stay in the dressing room´ - Montella annoyed with AC Milan|
|Juventus unveil dramatic change to club logo - but not everyone´s a fan|
|´I do not think I will return to coaching´ - Van Gaal set to call it quits|
|Torino 2 AC Milan 2: Bacca caps thrilling comeback as hosts pay the penalty|
|DR Congo 1 Morocco 0: Kabananga pounces on blunder to give 10 men the points|
|´Happy and comfortable´ Sanchez dismisses Arsenal exit talk|
|How much?! West Ham flop Simone Zaza could cost Valencia €20m|
|Mali v Egypt: Salah leads Pharaohs´ bid for AFCON glory|
|Sevilla concede they ´cannot force´ sporting director Monchi to stay|
|Ivory Coast 0 Togo 0: Reigning champions held to opening draw by Adebayor and co.|
|Goalkeeping woes, Stones and tactical confusion - How Guardiola is making life difficult for himself|
|Ozil and Sanchez can be persuaded to stay - Cech|
|Pogba: I rejected Barcelona and Real Madrid|
|Ghana v Uganda: Gyan dreams of first trophy since 1982|
|Chiellini: Juventus a work in progress|
|Robben agrees Bayern renewal until 2018|
|Hazard: Goals do not matter to me|
|Bennell pleads not guilty to eight child sex offences|
|Muller fed up with debate over Bayern role|
|Wenger glad Sanchez is not ´a Costa problem´|
|Flick resigns as DFB´s sporting director|
|Gomis ´can´t wait´ to welcome Payet to Marseille|
|Chinese FA changes foreign player rules after ´irrational´ spending|
|Like father, like son: Justin Kluivert follows in dad´s footsteps|
|´No reason to lose him´ - Marotta rubbishes talk of Allegri exit|
|Courtois: We don´t need Costa|
|Kane: Tottenham players won´t go to China|
|Noble ´angry and disappointed´ with Payet|
|Klopp furious over Matip uncertainty|
|Wenger surprised by tight Premier League|
|´Money is not everything´ - Conte issues warning amid China speculation|
|Fiorentina defeat a ´bad setback´ - Allegri|
|´This will elevate this group of players´ - Sampaoli revels in Sevilla late show|
|WATCH: Rio Ferdinand screams and dances in crazy Man Utd celebration|
|Real Madrid relaxed, admits Zidane after Sevilla defeat|
|Monaco go top of Ligue 1 with stunning Marseille victory|
|Ronaldo equals LaLiga penalty record as Real Madrid lose|
|Sevilla 2 Real Madrid 1: Stunning late comeback ends unbeaten run at 40|
|Fiorentina 2 Juventus 1: Brilliant Viola breathe life into Serie A title race|
|Tunisia 0 Senegal 2: Mane on target as favourites start strongly|
|Mourinho explains Klopp confrontation|
|Klopp delights in Alexander-Arnold display|
|Algeria must cut out mistakes against Tunisia - Leekens|
|Long balls led to Man Utd equaliser, says Klopp|
|´We attacked, Liverpool defended´ – Mourinho insists a point flattered Klopp´s men|
|DR Congo v Morocco: ´Confidence´ the Atlas Lions´ biggest hindrance ahead of AFCON opener|
|Ibrahimovic: Direct tactics worked for United|
|Guardiola rues gap to Chelsea after Goodison mauling|
|Algeria 2 Zimbabwe 2: Mahrez double prevents shock defeat|
|Manchester United 1 Liverpool 1: In-form Ibrahimovic saves hosts|
|Ivory Coast v Togo: AFCON champions hope to tame Le Roy´s ´troublemakers´|
|Guardiola lays City´s mental frailties bare after Goodison rout|
|Koeman hails ´perfect´ Everton after City mauling|
|Nice stalemate gives Monaco chance to go top|
|Guardiola suffers heaviest league loss in Everton thrashing|
|Neymar-esque Zaha is England´s loss – Bolasie|
|Everton 4 Manchester City 0: Koeman leaves old pal Guardiola´s title bid in tatters|
|Matip withdrawn from Liverpool selection over eligibility questions|
|Podolski staying at Galatasaray, insists sporting director|
|Cavani wants PSG stay|
|Torino move feels normal now – Hart|
|Chinese FA changes rule on CSL foreign players - reports|
|Bayern complete swoop for Hoffenheim duo Sule and Rudy|
|Aubameyang: Dortmund not really like Barca, Madrid or Bayern|
|Pogba can chance a game in one second - Herrera|
|Newcastle Jets 2 Perth Glory 2: Keogh´s eighth of season seals draw|
|Klopp: Liverpool ready for Old Trafford test|
|Herrera taunts Liverpool ahead of Old Trafford showdown|
|I had to be 100 per cent to stay at Boca - Tevez|
|No player is bigger than the club - Carroll takes swipe at want-away Payet|
|Icardi: I can always move to China at end of career|
|Mkhitaryan: Klopp convinced me not to join Liverpool|
|Mourinho: Pogba can score every game|
|Cameroon´s profligacy frustrates Broos|