Even the Chelsea fans seeing this news they'll have to laugh about it because this player of theirs doesn't worth half of the amount they are tagging him with, unless they are just trying to scare clubs away which I feel is a terrible way to do so, for a player that doesn't know what next to do with the ball in a one on one situation, that's if he has a clear one on one chance of about 10 he will miss 8, hit 1 on the goalkeeper's body and score 1, he is that bad for to me honestly, a striker that lacks improvement to start with, I hope is just a rumor...does he worth that amount £80m-£100m?

It cracks me up every time I see this £80m to £100m price tag placed on Nicolas Jackson. It will be very difficult to see any English club that will be ready to pay that huge amount for Nicolas Jackson so he will be missing chances here and there except maybe one of the Saudi clubs are interested in signing him then such fee can be realized.
This is really funny honestly, I agree with you completely and also no club from outside the EPL will even pay £50m for Jackson with how he has been making a mess of himself since last season and the Saudi you talked about should have come knocking to get him since Chelsea have decided to sell him but up till now all we have been hearing are rumors and I don't see any club getting him for £80m not to talk of £100m, if I'm to be honest about this Jackson's issues and the amount placed on him, it will be a disgrace to those players who are worth the amount £100m and above in the transfer market if any club should get Jackson for that amount, not his type that should be placed with that amount.
I feel Chelsea don't really want to sell Jackson, it's more like, if for any reason for them to sell him, then the amount must be something significant, so that's why his release clause is that high. Nobody has officially come for Jackson, just like you've said, we've been hearing only rumours of Manchester United picking interest which so far with the signing of Bryan Mbeumo, it has shown that they weren't serious, however I believe Jackson will be an integral part of Chelsea squad next season as the club has not shown much sign about letting him go.
If the clause is that high then I feel the player will definitely remain at Chelsea until they decide to reduce it. Chelsea knows what they are doing and is like they want to try their luck and see if any club can come for him but deep down they know Jackson is not worth that amount.
Manchester United need to be serious on the next player they are going for and if by chance they want to get the signature of Jackson then they should be ready for what comes next. The Blues has already made it clear that the player can't be a starter like he used because the new players that are in are very serious and they mean business so no jokes anymore, the highest that can happen is a long term loan for Jackson.