Newcastle United news: Sean Longstaff injury latest plus defender discusses Rafa Benitez's future
The 21-year-old left the London Stadium on crutches following a challenge with Robert Snodgrass in the first half.
Longstaff, who has started the Magpies' last eight Premier League fixtures, was expected to see a specialist on Tuesday to gain advice on the best course of action.
Advertisement
Hide AdAdvertisement
Hide AdMORE: Newcastle, Sunderland, Manchester United, Liverpool and Celtic included in potential World Cup bid
With nine league games remaining, Longstaff has been ruled out of Saturday's clash with Everton, yet it is unclear if he'll return before the end of the campaign.
The young midfielder has been in fine form since making his Premier League debut against Liverpool on Boxing Day.
Longstaff netted his first top-flight goal against Burnley at the end of last month and was also nominated for February's player of the month award.
Advertisement
Hide AdAdvertisement
Hide AdMeanwhile, Newcastle defender DeAndre Yedlin has spoken out about the future of manager Rafa Benitez.
The Spaniard's contract is set to expire at the end of the campaign and Benitez is yet to confirm if he intends to sign a new deal.
Yedlin, 25, has been a regular under Benitez and is desperate for the manager to stay at St James's Park.
When asked how important it is for the club to secure Benitez's future, Yedlin told Sky Sports News: "I think it's very important.
Advertisement
Hide AdAdvertisement
Hide Ad"I think everyone has seen how he has brought the city together.
"Even though we may not have started the season the best, we've ended very well, so I think it's very important. As we all know all the fans love him, the players love him and it would be great if he stayed."