Hartlepool United first-team coach John Hughes has said Middlesbrough loanee Charlie Wyke will be "missed massively" after returning to his parent club.
The 20-year-old striker was substituted at half-time in the 2-0 win against Bury with a pelvic problem and is now to undergo scans and assessment.
"We'll miss him massively," Hughes told BBC Tees.
"Although he's not been prolific, he's been up there fighting and battling and done a fantastic job."
When Wyke arrived at the club, his only previous taste of first-team football had come during 12 games on loan at non-league Kettering last season.
"For one so young, he's got a real physical presence, nine times out of 10 he's playing against two big physical centre-backs and held his own," Hughes added.
"He's picking up, becoming a better footballer and we'll miss him."
Wyke made 26 appearances for Pools following his arrival at Victoria Park last October, scoring twice.