Honestly, Chelsea has become a club where few African players who play there will be able to be successful. Victor Osimhen is a good player, but I doubt very much that he will be able to be successful at Chelsea. Even if Chelsea were to play in the European Champions League, I doubt very much that Chelsea will be able to get far in the European Champions League.
If Victor Osimhen was lucky enough to play for Real Madrid or Barcelona or Manchester City two seasons ago, then he would have had a good chance of winning big individual awards and the European Champions League. but at Chelsea he will hardly win the Premier League, the European Champions League and the Ballon d'Or
Victor Osimhen is a top player whose abilities has been tested in top European football leagues like the Seria A and the Turkish league and in both leagues he has stood out with brilliant performances and also winning the league title in both leagues so why will he not also flourish in the EPL with chelsea? If you talk about winning individual honors then that will ne difficult because Chelsea are not in stable form to help him achieve this but if it is individual performance like scoring goals that he will be able to achieve even with Chelsea.