Steve Bruce’s record breaking signing moved to the Stadium of Light on deadline day for a reported fee of £13 million, a move which will no doubt place a high level of expectation on the Ghanaian’s shoulders.
However, the former Rennes hitman, who was one of the outstanding performers at the 2010 World Cup, admits that he is far from the finished player and is hoping to continue to progress under Bruce’s influence.
“I can only do well if I'm winning things at club and international level,” he told Fifa's official website.
"But I don't want to get ahead of myself. The most important thing for me is to improve and mature as a player.
"Playing in England is a dream to many players, so I'm happy to be here.
"It's a big stage and I'm looking forward to the challenge that lies ahead. I know it won't be easy, but I will work twice as hard in order to achieve my goals.
"First I have to adapt to the conditions, but sure, I'm looking forward to the challenge and a change of environment."