By Jack Gallagher Arsenal and Chelsea target Viktor Gyokeres has opened the door to a return to England this summer. The 25-year-old has been a goalscoring revelation for Portuguese giants Sporting CP, scoring 36 goals across 39 games in all competitions following a club-record €20m (£17m) move from FA Cup semi-finalists Coventry City in July. Gyokeres has also contributed ten assists in Portugal’s top flight and has set up two goals in the Europa League \- a competition Sporting have now been eliminated from at the hands of Atalanta. The Swede’s prolific form has inevitably attracted the inte…