These days there are indeed rumours that discuss Chelsea and Osimhen. Indeed this could be good but on the other hand this could also be bad for Chelsea itself.

The conditions remain fifty-fifty I think. Osimhen is one of the young players who has been very good in these 2 seasons for Napoli and he is likely to continue his good form this season for Napoli but when talking about the possibility of him at Chelsea this is still ambiguous.
When a player who comes from Serie A with a more relaxed playing pattern will be very difficult to adapt to the EPL which has a strong intensity and fast game. some examples such as Lukaku, Pogba and Denis Zakaria have felt this and this could also apply to Osimhen.
On the other hand, Napoli are also unlikely to let their talented players leave easily because there must be an expensive dowry to redeem Osimhen's clause from Napoli.