Thiaw is well aware of Marseille's attacking threat tonight.
He stated: "I was really happy with the performance overall from the team, happy that we got these three points and that I did my job well as well.
"We just try to take the confidence we got, and also the emotional stuff we took from the game, we try to show tomorrow as well.
"In general, I'm a really confident player but of course if you play against one of the best players - maybe the best striker right now in football - it can give you a little bit of extra motivation or confidence, so of course I will take that."
Thiaw will be facing Mason Greenwood, Pierre-Emerick Aubameyang and Igor Paixão and continued: "They're one of the most offensive teams right now in Europe.
"I think all of these three players, they have big quality. They work well together, I think it's a good mix of experience with Aubameyang and the young lads. I played against Paixão last season as well, he's a good player. I think all of these three players, they're good players.
"Marseille is a really, really good team. The atmosphere will be great, that's what we expect. Of course the atmosphere will be more on their side, so we have to be clever with it and try to be smart."