Well a couple of points really. Firstly Doucoure is 27, so only a couple of years older. But aside from that, they are regular CL qualifiars, so people will move their at 24/5 for their main part of their career. We are not, so it's much harder to attract the same players.
They also pay a lot in nonuses and agents fees to get eals over the line that aren't declared, and pay enormous wages.
We have also done similar with Digne, Zouma, Mina, Gomes, Bernard etc. We have tried to do similar, but because we are not shopping at the same table we have had variable success.