Charlton midfielder Dean Sinclair has been forced to cut short a loan spell at Grimsby through injury.
The 24-year-old was in the second month of his stay at Blundell Park before succumbing to a hamstring problem.
He was due to remain with the Mariners until after Saturday's game with Lincoln, but has returned to The Valley ahead of schedule.
He limped out of Grimsby's 2-0 defeat to Rochdale on Saturday and it has been decided that he must head back to the Addicks for treatment.
"Dean has had a bit of an ongoing problem," said Grimsby's assistant manager Stuart Watkiss.
"I think we are at the stage now where he's got to do the right thing by himself. I don't think he's doing himself justice playing when clearly unfit.
"He's gone back down south for a few days to let the Charlton medical staff have a look. At the end of the day, it is the right thing to do. He's still a Charlton player.
"Then we'll just have to see how it settles down in the coming days. We all know that a fit Dean Sinclair strengthens the team."