Arsenal and Manchester United are in advanced talks over the possible sale of Juan Mata.
The former Chelsea player, who believed to be integral to Jose Mourinho's plans, whipped up a social media storm last night when he started following Arsenal on Instagram.
One source at Old Trafford has said that the club hierarchy are furious with Mata and his 'complete disregard for the club.'
'The deal hasn't been made official yet, so it's a bit disrespectful for Mata to be drawing so much attention to the deal.'
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