LONDON (REUTERS) - Belgium international Romelu Lukaku said he has evolved since he last played in the Premier League two years ago and has returned to Chelsea as a more complete player.

The 28-year-old striker moved to Chelsea from Inter Milan last week for a reported sum of £97.5 million (S$183 million), earning him a second spell at the London club where he spent three seasons from 2011 to 2014.