Costa will miss Chelsea’s next three matches after a Football Association charge of violent conduct was upheld, as reported by BBC Sport.
The Spain international striker put his hands in the face of Laurent Koscielny before clashing with Gabriel (who was sent off) during Saturday’s Premier League match between the Blues and Arsenal at Stamford Bridge.
Former United defender Neville does not believe that Costa should have been banned for three matches.
The former England international has also hit back at a United fan for arguing with him on Twitter (the tweet from the fan is not suitable for use here).
3 games for that. At worse it was two yellows = 1 game. Violent? No way..— Gary Neville (@GNev2) September 22, 2015
I'm embarrassed your a united fan with that stance having watched and admired the players we've had over the years https://t.co/6Ioq1lfOK1— Gary Neville (@GNev2) September 22, 2015
The three-match ban for Costa means that he will miss the League Cup third-round tie against Walsall away from home on Wednesday evening, and the Premier League games against Newcastle United at St. James’ Park and Southampton at Stamford Bridge.
It is a huge blow for the Blues, who have not started the 2015-16 league campaign strongly, with doubts arising on their ability to retain the Premier League title.