Newcastle manager Eddie Howe says there is no return date set for Callum Wilson but hopes the striker will be back before the end of the season.
Wilson, 29, suffered a calf injury in the draw with Manchester United on December 27.
It was thought the striker would return within eight weeks, but his recovery has taken more time than expected.
"There is a time when he's due back, but that time won't be absolutely clear," Howe said.
"That will be guided by how he feels and not necessarily by doctors and physios.