Midfielder injures Chelsea teammate, Costa in training

Super Eagles and Chelsea midfielder, John Obi Mikel injured his teammate, Diego Costa during training yesterday.

Mikel and his teammates are in Bangkok for post season tour and during training, a strong challenge from Mikel made Costa to limp out of the pitch.

Costa has had his injury problems this season and only just returned to first-team action less than a fortnight ago.

Mikel however apologised to Costa after his tackle,