Malky Mackay has admitted sending text messages that were "disrespectful of other cultures", but said they were "part of friendly banter".
The Scot and Iain Moody are alleged to have shared racist, sexist and homophobic text messages in claims sent by the pair's former club Cardiff City to the FA.
The League Managers' Association issued a statement on Mackay's behalf saying: ''If Malky has caused any offence by these two isolated matters he would wish to sincerely apologise.''
The statement admitted two messages Mackay sent were "disrespectful of other cultures''.
''These were...sent in private at a time Malky felt under great pressure and when he was letting off steam to a friend during some friendly text message banter," it added.
More top news
At least 2,000 people took to the streets of Baltimore yesterday to demand answers over the death in custody of Freddie Gray
The London Marathon brings together thousands of people raising money for charity - not to mention some rather unusual costumes.
Tottenham Hotspur footballer Kyle Walker said he is "disgusted" after being wrongly linked to an explicit video being shared online.