Mikael Mandron has fired a message to Sunderland boss Gus Poyet with a hat-trick against Arsenal U21s.

Now fully fit, the French centre-forward hit a treble in Sunderland's 5-1 win in London. Duncan Watmore was also on target for the visitors.

Featuring in defence for the Gunners was recent signing Semi Ajayi, who arrived on a free from Charlton Athletic last month.

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