West Ham United striker Andy Carroll remains a doubt for the Hammers' trip to Watford this Saturday.

Carroll has scored four goals in his last four matches to prompt talk of a Three Lions call-up for next month's games against Germany and Lithuania.

England boss Gareth Southgate went to the London Stadium to run the rule over Carroll against West Brom a fortnight ago, only to find he was missing due to a groin problem.

And the 28-year-old, whose last cap came in October 2012 due to a succession of injuries, has not trained since and remains a doubt for the match at Vicarage Road.

Hammers manager Bilic said: "When he's fit and playing Andy is a top striker.

"This is not a big injury but he needs to play, he needs to be available.

"I told him that the small things that are ruining, or affecting, his return, are no good for him, for us, or for a call-up.

"A similar thing happened last year, he was great at the beginning of the year, against Southampton and Liverpool he slaughtered them, but then he got injured and was out for a few weeks."

Bilic continued: "Unfortunately this is a little bit slower than we expected and hoped for. Regarding the game against Watford, he'll try to train and if he's good then maybe he has a chance to be in the squad for Saturday.

"With Andy you never know, if he can train tomorrow then maybe, maybe, he will be in the squad for Saturday."