Lukaku Welcomed Home
Striker presented on the pitch during half-time of Porto clash.
The striker, 21, completed a £28million move from Chelsea on Wednesday to rejoin the Blues on a permanent deal following last season's goal-laden loan spell.
Lukaku stepped out to a standing ovation and showed off the new number 10 shirt he will wear in 2014/15.
The Belgium international will return to training this week following an extended post-World Cup break and is expected to make his first appearance of pre-season against SC Paderborn next Saturday (9 August).