Lukaku completed a £97.5m move from Inter Milan to Stamford Bridge last week but missed Chelsea’s opening Premier League win over Crystal Palace as he had to complete a period of quarantine.
The 28-year-old Belgium international will train with his Chelsea teammates this week and will be available to face the Gunners at the Emirates Stadium on Sunday.
Tuchel is already exploring ways of getting the best out of his attacking options with the former Manchester United and Everton forward in his ranks.
‘We will prepare him to be ready for Arsenal and hopefully he can be on the pitch,’ Tuchel told Chelsea’s official website.
‘I’m very happy with Timo, Christian and Kai because they have put a lot of effort and intensity into the team.
‘With the addition of Romelu. We get the number-one striker and we want to have him on the pitch. This is very clear.
‘If you do this kind of transfer, we are absolutely sure we want to have him on the pitch, but I think he will lift the pressure off the shoulders of the young guys, from Kai, Timo and Christian, because Romelu is the kind of personality who loves responsibility.
‘I think we have now with Romelu the chance also to play with two strikers, like they did at Inter with him, or to continue with three strikers.
‘We will see now how this works out and we will find a solution for the players around him.’