Despite his youth, at 22, Batshuayi has generated great debate amongst some of the biggest names in Belgian and French football:
Jean-Pierre Papin (Marseille legend):
"Of course he could and should have done better. But I can tell you that OM has been lucky to have a striker like him at certain times of the season. He has real strengths, strong on both the right foot and left foot, and is comfortable on the ball.
"Today, for me, he does it all. Finding another striker like him will be difficult ..."
Fabrizio Ravanelli (ex-Marseille):
"This is a forward who has great potential. Everyone can see that this is a striker, a real one. In the last 20 metres, he is always ready. In his movement, I find him impressive."
Eric Deleu (Standard Liege coach):
"He has everything to become a great striker. He is strong, can beat a defender with speed and has a sense of purpose."
Jean-Pierre Bernes (agent, ex-Marseille director):
"Marseille is a difficult club for young players, even if they're French. The pressure is huge. Before recruiting a good player, Marseille must recruit someone strong of mind.
"He is not André-Pierre Gignac. All the pressure of being the No9 of OM will be on his shoulders. At his age, it's heavy."
Marc Degryse (ex-Belgium international):
"He is mobile, has two good feet, is quick enough and can play with his back to goal. He has become more mature and I like him more.
"Actually, this lad is perhaps the best striker Belgian has."
Christophe Galtier (St Etienne coach):
"After they changed their strikers, we thought we'd win. Gignac being top scorer, we thought that the worst was over. But then Batshuayi came on and punished us twice."
Laurent Ciman (ex-Standard Liege):
"He will be missed. If you give him two chances, he is going to score. You never realise the importance of a player until he's gone."