more info on Guehi (good for us, but no idea why we structured hsi sell-on fee to EXCLUDE us trying to buy him back)
According to The Daily Mail, Guehi's transfer from Chelsea to Crystal Palace in 2021 saw the Blues retain both a sell-on clause and buy-back clause for the England star. Any permanent transfer from Crystal Palace would see Chelsea pocket 20% of the transfer fee unless they themselves are moving for the player, and the Blues would also have the opportunity to match any incoming offer.
Sell-on clauses in particular can complicate transfers, as the selling club doesn't collect the entire fee and might increase the asking price to make up for the deficit.