Manchester United striker Romelu Lukaku admits he's determined to get the most of out of his career.

The 25-year-old watches re-runs of all of his games in a bid to improve and said he is driven by the desire to be the best he possibly can, so he has no regrets when his career is over.

"I try to look at as many games as I can from the season before, the mistakes I have done and the points I can improve on," said Lukaku, talking to Football Focus.

"In the first week, we come in and analyse what I want to work on throughout the season.

"The reason I score more and more goals, season after season, is I know my mistakes from the past, I know my strengths and I work on my strengths, but the little points I want to get better and it's constant.

"Football is what, 15 years? I want to invest 100 per cent of my life into the game, so when it's all said and done, I don't want to have regrets."