Cape Town - Everton striker Romelu Lukaku believes it is just a matter of time before he starts hitting the back of the net again following his return to full fitness.Lukaku has played just once for the Toffees so far this season as he has struggled to get his match fitness back after playing in the European Championship with the Belgium national side.There were strong rumours suggesting the 22-year-old was on his way out of the club during the transfer window but he remained with the Toffees and is now eager to get back to full fitness and start scoring goals again."I just went on holiday and when I came back the last game before the season started I had an injury. It kept me out for a long time. I couldn't do anything with it," he told Sky Sports."So now for me it's just my pre-season phase so I'm working really hard to be 100 per cent fit. As soon as I'm fit the goals will come for sure."Me and him (Koeman) didn't talk too much about the situation. He was in contact with my agent throughout the period. I just focused on my football. For me personally I just want to do my best for the team."