"Liam's injury is worse than we feared," Robins boss Gary Johnson told the Bristol Evening Post.
"He went for the scan on Monday and it showed up ligament damage. He will be out for a minimum of three weeks and maybe longer."
It is being widely reported that Leicester City are the favourites to sign Manchester City striker Kelechi Iheanacho, and if
Last week Wayne Rooney completed his return to boyhood club Everton, writing the final chapter in a fairy tale career.
Wayne Rooney has returned to Everton after 13 years at Manchester United.
Germany defender Antonio Rudiger has joined Chelsea from Roma on a five-year contract.
Wayne Rooney has closed the chapter on a Manchester United career that featured a raft of honours across 13 years.
Wayne Rooney has returned to Everton after a record-breaking career at Manchester United.