BBC:
Chelsea midfielder Mikel Jon Obi has apologised to Blues boss Jose Mourinho to try and heal a rift between the two.
Obi is understood to have angered Mourinho with his poor attitude in training, and met Mourinho with his agent John Shittu.
The 19-year-old has not featured in a Chelsea squad since being sent off in his Premiership debut at Reading.
He reportedly apologised for his behaviour and Shittu assured Mourinho there would be no repeat.
Obi arrived at Chelsea in June in a welter of controversy, after the Blues won a £16m tug-of-war with Manchester United for the talented teenager.
Manchester United believed they had a pre-contract agreement with Obi, who later claimed he had been pressured into signing it, and really wanted to join Chelsea.