Everton boss Roberto Martinez also offered fitness updates on Seamus Coleman and Darron Gibson as well as the pivotal duo of Gareth Barry and Leighton Baines - and there was also an update on the fitness of James McCarthy.
Everton manager Roberto Martinez is sweating on the fitness of four players ahead of this weekend's clash with West Ham United at Goodison Park.
Martinez didn't rule Gareth Barry and Leighton Baines out of this weekend's game completely but admitted the former is unlikely to be available after picking up an ankle injury against Sunderland prior to the international break, and confirmed that midfielder James McCarthy has suffered a Grade One hamstring injury.
Baines pulled out of England duty with a hamstring injury prior to their qualifier against Slovenia last Saturday and returned to Finch Farm for treatment, whilst McCarthy linked up with his national side but didn't participate much in training.
Martinez said: "We're checking Leighton Baines on a daily basis - we're not sure if he'll be fit for West Ham but you can never rule him out. We are also not sure if Gareth Barry will be ready."
The Everton boss said the Irish duo of Darron Gibson and Seamus Coleman were feeling the effects of the international break, adding that Coleman played with five stitches in the Euro 2016 qualifier against Scotland.
This weekend's clash will prove to be a tough test for the Toffees as they face a West Ham side who have made a very impressive start to the season - as they are currently level on points with fourth place Arsenal.
Martinez told reporters ahead of the game: "West Ham have been the most consistent team in the Premier League and it wasn't by accident. The way they play is very brave, they have a lot of attacking players. They are going to throw one of the biggest challenges we have had towards us.
"It is still early days but we still have four teams challenging for the title and eight teams looking for Europe. West Ham are one of the big challengers for those places without a doubt.
"This can be a really successful year for Sam [Allardyce] and West Ham."
The Everton boss was also asked about speculation linking the club with a loan move for Barcelona full-back Martin Montoya, but didn't offer a comment.