Looks like pretty much same letter sent out to all of us!!!
'Many thanks for getting in touch with us about our recent social media post.
The picture you refer to was used after it had been filed by a national picture agency, captioned “Bertie”, and was used in good faith and in a congratulatory way to celebrate the fan’s dedication to Manchester City. None of the team on the BBC Sport website were aware of “Bertie” as being a derogatory term to describe City fans – and other City fans also shared the post and mirrored our congratulatory tone.
As it was never our intention to cause offence, we have now removed this post for the avoidance of doubt. We are proud of our inclusive and celebratory approach to social media and work hard to ensure we are balanced across the sporting spectrum at all times.
We’re sorry you’ve had cause for concern.
Kind regards
Katherine Tsang
Deputy Complaints Manager
BBC Audience Services
http://www.bbc.co.uk/complaints