The two strikers will face-off in Sunday’s clash at Stamford Bridge.
When asked about whether he would pick Lacazette over Morata, Merson said on Sky Sports’ The Debate: “No, I like him (Lacazette), I think he is a good player – but Morata is top top draw. Morata is going to be an absolute star in the Premier League. He’s different class.
“I watched him come on as a sub in the first game against Burnley and even in that 15 minutes…It’s like when you watch something and someone’s done something in 15 minutes and you think ‘wow, they can play’ and he done that about five times. He’s hit the ground running.
“I like Lacazette don’t get me wrong, but if I was playing Real Madrid on Saturday he would play in front of Lacazette.”