Hoskins picked up a back injury in training last month

Nottingham Forest's on-loan striker Will Hoskins will have a scan on a troublesome back injury.

The Watford player was given the all-clear last week to resume training but the problem has returned.

"We're in the dark about the injury but hope the scan will tell us once and for all what the problem is," Forest boss Colin Calderwood told the club website.

Hoskins, 21, is at the City Ground until the end of the season with view to a �500,000 permanent move.