They are not the same, Mount and Chelsea are not eye to eye, the club is not giving him a new contract and his current contract is running down. Chelsea also have 36 registered players and need to bring it below 25 before June 30 or incur penalties, this means they are forced, when there is a element of forced to sell eg: in administration your assets are sold to alleviate debts, it affects the clubs value on the player.
The situation with Bruno Guimaraes is like Brighton with Caicedo et al, Arsenal bid 80m for Caicedo, Bloom rejected and said they want 100m to start talking. Is caicedo worth 100m, probably not, is he worth 80m probably closer to reality but because Brighton don't need to sell, they dont want to sell and he is in demand, they can put a premium on him as overpay is always worth it, as much as I don't want to sell Bruno G, if we got 120m+ overpay we can turn that into 2-3 players before even spending our allocated budget adding depth. The old saying of there is no pay like overpay.
So no, it is not because its my club, Brighton are in a similar position and you can bet your bottom dollar they will be getting Cucurella level overpay for Mac Allister, Mitomo, Caicedo and Ferguson if they are to release them. Chelsea are forced, we are not ergo more value not a firesale.