Big no from me. 1 open goal in 37 PL apps last season. Don`t think this guy is much better than Palmer or Bobb. The two latter would also have loads of PL experience if they played for a non top 6 team. We need either a winger that could come in and be an immediate starter in the side, or push Bernardo out wide permanently and sign a new midfielder. At best, I think Olise would only be a tiny upgrade on Palmer/Bobb
Bobb and Palmer already know how we play also. Buy Olise and chances are you've got that year of settling in before any kind of decent returns (which aren't guaranteed either).