Chief executive Peter Storrie is due to finalise the transfer next week and played down concerns about the winger's former club Velez Sarsfield still owning the player.
"That's not a problem," said Storrie. "We would buy the player 100 per cent from Mallorca and they would have to deal with the Argentinian club.
"It's not like the situation with third-party ownership we are seeing.
"He is a very good player. We don't want to lose out on him, so hopefully we can put it to bed."