"Fifa now has to take the lead.
"Otherwise, it's going to be anarchy, and the game is going to be in the hands of third parties."
"This is a warning of the problems that can ensue.
"Fifa needs to take the lead has to make sure that if there's going to be a registration system for players, the onus has to lie with the clubs to hold that registration.
"Clearly this could raise all sorts of problems in the same way you have clubs in the same competition owned by one owner. It comes down to sporting integrity."
"They [players] must be very wary of allowing their rights to be owned by an outside party.
"Perhaps in light of new regulations on agents, the Premier League and other leagues need to see all the relevant documentation at the time of transfers."