Rangers star Jon Flanagan is set to leave Belgian side Charleroi without playing a single minute.The full-back departed Ibrox last summer having fallen well down the pecking order under boss Steven Gerrard.He then made an ambitious switch to the continent but the transfer has proven a disaster.Flanagan suffered a setback in testing positive for Covid-19 but the former Liverpool youth failed to even make the bench for the Jupiler Pro League outfit.And he's now in talks with three Polish clubs -