Though Gyokeres is likely to play a couple of friendlies for Arsenal in the build-up to the new Premier League season his first, full debut for the club will be on the opening weekend of the season. Arsenal take on Manchester United at Old Trafford in the headline match on Sunday 17 August with kick off at 4.30pm BST.

The 27-year-old, who fired Sporting to the Portuguese title last season with 39 goals and netted a Champions League hat-trick against Manchester City, is reported to have signed a five-year deal in a transfer worth £55 million (62.