Seamus Coleman and Eliaquim Mangala will both undergo scans on Sunday to determine the extent of injuries the pair suffered in Everton’s victory over Crystal Palace.
Centre-back Mangala was replaced by Ashley Williams late in the first half of the Toffees' 3-1 success after the Frenchman was hurt in a challenge with Palace defender James Tomkins.
Coleman, meanwhile, did not reappear after the interval on what was his second first-team appearance following 10 months on the sidelines.
Sam Allardyce moved to allay any concerns that Coleman had reinjured the leg he broke playing for Republic of Ireland last March.
The manager, however, confirmed Mangala’s problem was “less serious” than the one sustained by buccaneering right-back Coleman.
“Seamus will have a scan tomorrow, as will Managala,” Allardyce told evertontv. “I would have thought Mangala will be the less serious of the two injuries.
“Manga’s is his knee and Seamus is a muscle as opposed to his leg. He will go for a scan tomorrow.
“The good thing is we have two weeks before we play the next game, which will allow the players with injuries and fatigue to recover and get ready for Watford [on 24 February].”
Allardcye revealed Idrissa Gana Gueye was also replaced due to an injury – although the Senegal international midfielder’s 80th-minute withdrawal for Morgan Schneiderlin was a case of the boss erring on the side on caution, rather than anything more sinister.
Allardyce admitted he was frustrated at being denied the opportunity to afford playing time to either of attacking duo Cenk Tosun or Yannick Bolasie.
But he was delighted nevertheless with the manner in which his side overcame their series of injury setbacks to score three second-half goals – and record a second successive Goodison Park victory, the fourth in seven home games since Allardyce assumed the helm.
“We are right on song in terms of home performances and results,” said Allardyce.
“The players mastered the game well from start to finish. We never looked in any real trouble throughout.
“We put out a similar team to the one which beat Leicester 10 days ago but had to change that because of the two injuries in the first half.
“It did not allow me to put on Yannick or Cenk and let them have a go. I would have loved to have done that but could not because of the injuries we suffered.”