Chelsea midfielder Nemanja Matic was sent off as they lost 2-1 at West Ham United who climbed to second in the table.
The FA cleared the Chelsea manager of making discriminatory comments to Eva Carneiro, who has left the club.
Top London clubs faces shock defeat at UEFA Champions League group-stage encounters.
Pele said that Diego Costa’s act sends wrong message to the kids.
Diego Costa will be unavailable for Wednesday’s League Cup third-round tie at Walsall.
The result lifted Chelsea from 17th into mid-table while Arsenal stayed fourth.
Eden Hazard skied an early spot-kick high over the bar in the 4-0 Champions League win over Maccabi Tel Aviv.
Chelsea fluffed an early chance but the opposition hardly troubled the home side in the entire first half.
Thibaut Courtois is expected to have a longer stay at the bench as the club is expected to arrange a number of fitness tests for the goalie.
Pedro Rodriguez has gotten off to a flying start with the Blues, scoring one goal and providing two assists in his first two games.
Jose Mourinho refused to rule his team out of this season’s title race because the league had become even more competitive.
Raheem Sterling scored his first goal for the club and Fernandinho netted a superb second to lift City to their fourth successive win and open an eight-point advantage over Chelsea.
Pedro Rodriguez won 20 trophies in his time with Barcelona, including five La Liga titles and three Champions Leagues crowns.
Pedro scored Chelsea’s opening goal and them assisted Diego Costa to set up the second.
Jose Mourinho hailed new signing Pedro Rodriguez and said he has been ‘impressed’ with his attitude. Jose