If he saw out his contract and moved in the summer City would be entitled to compensation for Ledley unless he moved to a foreign (inc Scotland) club.
Joe is currently playing with a hip injury that eventually will need surgery. City have in the past turned down a £6m from Stoke City.
The News of the World claims that Michael Chopra could on the verge of a move to Celtic. Thier opening sentence says that Chopra has confided in pals that he could be on the brink of a move North.
Chopra was third choice striker for City with Josh Magennis and then Warren Feeney coming on ahead of him against Blackpool.