Central defender Vitorino Hilton has signed a one-year contract extension with Montpellier.
AC Milan have completed the permanent signing of defender Cristian Zapata from Villarreal for an undisclosed fee.
Brighton boss Gus Poyet has already begun preparations for next season.
The Seagulls flirted with the play-offs this term, their first back in the Championship, before finishing in a creditable 10th spot.
Poyet is now looking to improve on that next season and, as well as trying to persuade the likes of Vicente Rodriguez to stay at the club, he will attempt to add more quality to his squad.
"We need to improve but it's not going to be easy because there's a race to get the best players," said Poyet. "We'll start working very hard now."
Brighton finished the campaign with a goalless draw at Barnsley and Poyet saluted the travelling support for turning up in numbers yet again.
"The fans have been fantastic," he added. "Even (Barnsley boss) Keith Hill was surprised to see how many fans came up from Brighton for a game which didn't mean anything."