The striker has completed a move from Crystal Palace.
The former Owls left-back says he could have prolonged his career by another five years.
The Northern Irishman was taking charge of the Scottish Premiership side for the first time.
The Arsenal manager has been suggested as a potential next England manager.
The striker is set to complete a move from Crystal Palace this summer.
Pre-season is set to begin and Shayon Harrison is the club's senior striker.
Lewis Hamilton has admitted that he is going to face an uphill battle to win this year’s Formula One world championship.
The Serbian tennis player Viktor Troicki unleashed a furious tirade at an umpire as the world No27 crashed out of Wimbledon.
The calendar insists the end is near for Venus Williams, but the results continue to dissent. The 36-year-old American – the oldest woman in the top 200 and the oldest in the draw here – overcame a game challenge from Maria Sakkari in an entertaining second-round tilt on Thursday to book a meeting with Russia’s Daria Kasatkina in the round of 32.
Rory McIlroy’s demeanour tells any onlooker he is not consumed by the pressure of trying to complete a clean sweep of major championships at his second attempt. As the 26-year-old himself put it: “Someone told me once that pressure is for tyres.”
The Bosnian was not impressed with his own performance at the weekend.
Laurent Blanc has admitted relief at avoiding the “ogres” of Barcelona and Bayern Munich in the Champions League quarter-finals, the Paris Saint-Germain coach believing that Manchester City trail his club in Europe.