Meanwhile the fact the Swedish star won't return to Portugal has been heavily reported on. Gyokeres has not reported for pre-season training whilst Arsenal hash out a transfer, leading Sporting's president, Frederico Varandas, to threaten disciplinary charges against his own player.

Gyokeres stirred controversy by skipping pre-season training with Sporting last week amidst ongoing transfer negotiations. Sporting's president Frederico Varandas has confirmed that the club intends to penalise the forward.

Arsenal are still trying to get a blockbuster deal for Viktor Gyokeres over the line and remain locked in talks with Sporting Lisbon over a transfer fee for the striker