Arsenal will clearly be able to provide new experience to Michael Olise because if he joins there, he will be able to play in the Champions League next season. However, it seems that what determines it is not Olise's wishes, but rather will be influenced by the amount of money that Crystal Palace can obtain from the deal, and which team really has the seriousness to sign Michael Olise. Whatever the result, it is still a good thing for Michael Olise's career because both Chelsea, Man United, and Arsenal are good teams and could be the right place for him to continue to improve, and get bigger wages.
You are right, of all teams interested in Olise currently i think Arsenal will be a suitable team for him to play because of their current style of play but there are things to be considered like the demanding price by crystal palace if Arsenal will be willing to pay such price. Knowing that several teams are showing interest Crystal Palace will be asking for a higher price because of the competition and i don’t think Arsenal will pay huge amount for him. Let’s say Arsenal was able to sign him will Olise be on the bench for Saka? With such amount spent and considering his talent will he settle as a substitute or will Arteta find a way to play him?
Chelsea has cole palmer and Madueke already so he might struggle for playing time at Chelsea too and Manchester United is known to be a team that kills talent so I wouldn’t advise him to sign for Manchester United.