Everton midfielder Gylfi Sigurdsson could be set for a lengthy spell on the sidelines after picking up a knee injury in the win over Brighton on Saturday, according to The Guardian.
The Iceland international played the entire 90 minutes in the much needed victory at the weekend, but despite that it appears he has damaged his knee joint and could be out for some time.
The full extent of the injury is yet to be determined with Sigurdsson set to have undergone scans on Monday evening, but already there are fears that he will miss the remainder of the campaign.
The news was broken by his brother when he spoke to Icelandic media and was later confirmed by Everton, who made a statement saying the total length of his absence would only be known after consultation with a specialist.
This will be a real blow for the Toffees as they look to finish the season with a flourish. Although Sigurdsson began the season slowly, he has really developed into the player he was expected to be since Sam Allardyce arrived at Goodison Park.
Five of his seven goals in this campaign have come since Ronald Koeman, the man who shelled out Â£45 million to take him from Swansea City to Merseyside, was sacked last year.
With James McCarthy also on the sidelines for a lengthy period, Everton are having little luck with injuries in the middle of the park, and after Seamus Coleman has only just returned from a broken leg, the treatment room has been used regularly this season.
This latest issue could open the door for a revival in the career of Davy Klaassen, who has been out of favour ever since Allardyce took office at Goodison. The Dutch playmaker could play a similar role to Sigurdsson if given the chance.
If the Iceland international is out for the rest of the season then there will be real fears about whether he will be fit for the World Cup in the summer, so this blow could be significant for both club and country.