Bayern paid a loan fee of £14m ($19m) for Jackson, and would have to pay an extra £56m ($76m) if he reached his minutes target, but that now seems to be out of the question. The striker was also on the radar of clubs in Spain and Italy last summer, but Chelsea are not ruling out the prospect of keeping him, with Liam Rosenior having replaced Enzo Maresca as head coach at Stamford Bridge.
Jackson has, however, only scored five goals for Bayern to date and doubts remain over whether he can deliver consistently at the highest level.