Liverpool are awaiting scan results amid fears that record signing Alexander Isak has suffered a broken leg following his injury in Saturday’s 2-1 win over Tottenham, reports said Monday.

The Sweden forward was hurt while scoring the opening goal, following a sliding challenge from Spurs defender Micky van der Ven. Isak, 26, who came on as a second-half substitute, was visibly in distress and unable to celebrate before leaving the pitch.

Liverpool manager Arne Slot acknowledged the seriousness of the situation immediately after the match.

“If a player doesn’t even try to come back, that is usually not a good thing, but I cannot say anything more than that,” Slot said. “That is just gut feeling and nothing medical… let’s not be too negative yet. We don’t know yet. Let’s hope he is back with us soon.”

Reports from The Athletic and Sky Sports suggest Liverpool fear a broken leg, which would sideline Isak for a significant period.

Isak has had a challenging start at Anfield, making just 16 appearances and scoring three goals since his £125 million ($168 million) British record move from Newcastle on transfer deadline day. A pre-season dispute with Newcastle delayed his preparation, leaving him behind his teammates in fitness, and his campaign was further disrupted by a groin injury.

Any long-term absence would be a major blow for Slot, with Mohamed Salah away at the Africa Cup of Nations and Cody Gakpo not expected to return from a muscle injury until early next year. This leaves Hugo Ekitike, who has five goals in his past four games, and the little-used Federico Chiesa as Liverpool’s only senior forwards.

Liverpool, whose Premier League title defence was derailed by a poor run of results, have climbed to fifth after extending their unbeaten league run to five games.