By Chelsea correspondent Tony Hughes

Diego Costa could be in more trouble after throwing his bib at Jose Mourinho in a public show of dissent.

The controversial striker launched his substitute’s bib towards his manager from the back of the dugout in the final minutes of Chelsea’s 0-0 Premier League defeat at Tottenham on Sunday.

It landed close to Mourinho’s right shoulder as the Portugese sat in the front row of the White Hart Lane dugout overseeing the final minutes of the draw.

It comes in the wake of Costa’s midweek bust-up with Mourinho in the tunnel at the end of the first half of Tuesday night’s 4-0 win at Maccabi Tel-Aviv.

The Chelsea manager insisted a line had been drawn in the sand at his Friday media briefing but questioned the striker’s ability to read the game and then dropped Costa to the bench and overlooked him completely for the London derby despite the unavailability of Radamel Falcao and Loic Remy, as winger Eden Hazard spearheaded the attack.

Sub standard: Diego Costa was furious at being at unused substitute at White Hart Lane

Sub standard: Diego Costa was furious at being at unused substitute at White Hart Lane

The Spain international sat stony faced on the substitute’s bench for most of the match before emerging late on in the game to embark on some half-hearted warm-up exercises.

When it became clear that he would not be sent on as a late substitute to help win his team the game, Costa reacted by tearing off his purple bib and throwing it behind his back, where it landed close to Mourinho.