According to L'Équipe, Romain Del Castillo signed with Osasuna this Monday. The French player leaves Brest after five seasons and has signed a two-year contract with an optional additional year. Brest will receive one million euros, with an additional 450,000 euros in possible bonuses, and a 15% share of the profit from any future resale.

Stade Brestois 29 has announced that Romain Del Castillo is departing to Spain following a transfer agreement with CA Osasuna. The transfer will result in Stade Brestois 29 receiving approximately 1 million euros. The club also expressed gratitude and noted Romain Del Castillo's contributions during his 5 seasons, which featured a historic 3rd place in Ligue 1 and participation in the Champions League.

An agreement has reportedly been reached between Stade Brestois and Spanish club Osasuna for Romain Del Castillo. The transfer fee for the 30-year-old French-Spanish right-winger is said to be €1 million. Some details are still to be finalized, but Del Castillo is set to play in La Liga this season. This will be the first time in his career he has left France. Del Castillo, who has 10 caps for the France U21 team, joined Stade Brestois in August 2021 and his contract was set to expire in June 2027. Transfermarkt estimates his current market value to be €7.00m.