The midfielder was spotted winding up the travelling MK Dons supporters during the warm-ups on Saturday.
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Pell was an unused substitute for Wimbledon as they snatched a dramatic 1-0 victory over their bitter rivals.
Ronan Curtis came off the bench to score in the 94th minute and claim all three points.
Prior to the match, though, Pell was seen kicking balls at the away fans at Plough Lane.
Footage of his antics have since gone viral on social media, to the amusement of supporters.
One fan reacted by writing: “This is top class s***housery.”
Another added: “That’s f***ing brilliant.”
A third supporter also commented: “So much time for this.”
However, an MK Dons supporter group have since confirmed they are planning to lodge a complaint against Pell.
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In a statement shared on social media, Franchise Dons said: “We plan on making a formal complaint by whatever means necessary and to whoever it may concern regarding the AFC Wimbledon player that booted 10+ balls into the MK Dons away fans prior to kick-off, whilst his team-mates peacefully warmed up.”
Pell is in his second spell with Wimbledon having re-joined the club from Accrington in the summer.
The 32-year-old, who has scored twice this season, previously spent two years on their books between 2013 and 2015.
With their derby win, Wimbledon are now just four points off the League Two play-offs in 10th.
Meanwhile, MK Dons remain in the top seven in fifth and are five points adrift of the automatic promotion spots.
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