Everton manager Roberto Martinez believes loan rules should be changed to allow players to take on their parent clubs.
At present, the standard Premier League loan rules stipulate that any player who leaves their parent club for a short-term spell elsewhere is ineligible to play against the club they are wholly contracted to.
"When you reach an agreement to allow a player to go, he should be allowed to play," he said on Thursday.
"I don't see a healthy way to treat a loan in not allowing a player to play against a parent club.
"The fairest way is to see what we've seen in the European competition, to see a player fully focused on the team that he is [playing for] and then at the end of the season it will be a matter of reassessing the situation.
"The loans are a real need in the modern game for different reasons. It's a very interesting debate and something that should be looked at.
"We shouldn't have two different rules in different competitions, I think the domestic laws should be the same as the European laws in that respect."
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