Blackpool manager Ian Holloway is concerned that Billy Clarke's knee injury may prove to be serious.
The 22-year-old striker picked up the injury after only two minutes of the pre-season friendly against Tiverton and was forced to limp out of the action.
The Seasiders are waiting on the results of a scan but Holloway said: "Bill's been so keen and jumped up and twisted his knee a bit when he landed.
"We're hoping it won't be too serious and won't keep him out for too long. That was the first challenge of the game, wasn't it?
"You never want anyone to get injured in pre-season but it's an occupational hazard, I'm sure he won't be too bad."
Meanwhile, Holloway is being linked with a move for the former Everton and Arsenal star Francis Jeffers who was released by Sheffield Wednesday at the end of last season.
The 29-year-old is set to train with the rest of the Blackpool squad on Monday while Newcastle United youngster Nile Ranger is being linked with a loan switch to Bloomfield Road.
Bolton Wanderers defender Danny Shittu is another possible new arrival at the club.