Now that clubs won't be allowed to co-own new players anymore (only renew for one more year the ones that already exist), this will completely change mercato strategy.
Pereyra won't be able to be bought in co-own. If Udinese rates him at 15M, get the fuck out.
Baselli won't be able to be bought in co-own. The same for Zappacosta and others.
And in one year, Juve will have to resolve all the co-owns they have - this includes Gabbiadini, Zaza, Berardi, Boakye, Marrone, Rugani and many others. We will spend a lot of money with that.
It wasn't the best moment to change the rules, but one time it would have to happen.
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And now this actually may be a strong incentive so the club learns to develop more talent within Juve. You don't have to loan out all and every talent you have. Italians must learn this. Ending co-ownership is the hard way, but might be effective.