Bournemouth midfielder Lewis Cook has ruptured the anterior cruciate ligament in his right knee and will miss the rest of the season.
The 24-year-old was forced off in the second half of Saturday's 1-1 draw at Preston North End in the Championship.
Cook suffered a similar injury in December 2018, and did not return to first-team action until September 2019.
The Cherries are seeking specialist advice regarding Cook and say he will be out for "a number of months".
The former Leeds United trainee, who moved to Vitality Stadium in 2016, has scored one goal in 35 appearances in all competitions for the Dorset outfit this season.