Newcastle United midfielder Isaac Hayden will miss the rest of the season as a result of the knee injury he suffered during the defeat at Brighton.
The 26-year old was stretchered off in the first half on Saturday after a challenge with Yves Bissouma and a scan has revealed "significant" damage.
He will not require surgery, however, and will now begin a rehabilitation programme.
Hayden has played 27 times this season, scoring one goal.
The former England Under-21 player, who joined Newcastle from Arsenal, said on Saturday the incident with Bissouma "was a complete accident".