Theo Walcott warns Premier League to watch out for him and Alexis Sanchez next term

Theo Walcott has warned the Premier League to watch out as he posed for a picture with Arsenal new boy Alexis Sanchez on Thursday.

The pair were all smiles as the Gunners wideman took a selfie with Arsenal's new £30million summer signing.

Posting the snap to Twitter, Walcott said: 'Watch out PremierLeague Me and Alexis Sanchez will be a deadly force!! Speed matters.'