John Mikel Obi’s days at Chelsea could be numbered as the club look set to offload this Nigerian international footballer at the end of this season. According to reports in England, Blues boss Jose Mourinho has informed Mikel he can leave the side for a small fee this summer. The Premier League giants have already started looking for Mikel’s replacement, with Olympique Marseille’s Gianelli Imbula identified as a potential successor. Mikel has become unsettled at Chelsea since the return of Mourinho to west London. The midfielder, who was earlier linked with a move to Galatasary and AS Monaco, has fallen further down the pecking order at Stamford Bridge following the January arrival of Nemanja Matic.