Luisinho says Deportivo La Coruna must block Juanfran from joining Barcelona.

Barca want Juanfran as an emergency signing to cover injured fullback Aleix Vidal.

Luisinho says: "[Juanfran] should not be able to leave, it would be a significant loss.

"He shouldn't be allowed to leave because the transfer window closed. He doesn't know anything concrete, either, and is happy here. He already rejected other offers.

"Juanfran is a really impotant player for us, he's having a good season. If he has to leave, then hopefully it's for his own good, but we know it would be a big loss because he's a vital player for the team."