The Lion City Sailors are delighted to announce that Portuguese left-back Diogo Costa has signed a permanent five-year contract with the club, following an outstanding loan spell in which he played a key role in the Sailors’ historic treble-winning campaign.
The 21-year-old arrived in Singapore during the mid-season transfer window in January 2025 and wasted no time in making his mark as he quickly became a fan favourite, earning plaudits for his dynamism, grit, and relentless work rate down the left flank.
Blending European pedigree with a fearless style of play, Diogo added steel to the Sailors’ defence while posing a constant attacking threat with his overlapping runs and pinpoint deliveries.
He recorded 11 assists in 21 appearances across all competitions, including four in the Asian Football Confederation Champions League (ACL) Two, where he played a pivotal role in the club’s dream run to a first-ever continental final.
Among his standout contributions in the tournament were winning a penalty just 10 minutes into his continental debut against Muangthong United, setting up both goals in the Sailors’ 2-0 triumph over A-League giants Sydney FC, and delivering the injury-time cross for Maxime Lestienne’s dramatic equaliser in the final against Sharjah FC.
His impressive performances made the decision to convert his loan into a permanent deal a straightforward one. The long-term contract underscores the club’s commitment to continuity and sustained success, as the Sailors look to build on a stellar season in which they swept all three domestic trophies — the Community Shield, Singapore Premier League, and Singapore Cup.
“Diogo not only gave us an added dimension down the flanks; he brought a competitive edge and intensity that helped raise standards across the entire team,” said Sailors Head Coach Aleksandar Ranković.
“We’re delighted he’s committed his future to the club, and I’m confident he will continue to perform at the high level he consistently showed last season.”
Diogo, who came through the youth ranks at Primeira Liga side FC Famalicão, expressed his excitement at extending his stay with the Sailors.
“From the moment I arrived, I felt something special building here — from the players and fans to the club’s ambition, I feel a deep connection and a strong desire to contribute to this project,” he said.
“It’s an honour to be a Sailor for the next five years, and I’m committed to doing my part to help us realise our dream of becoming one of Asia’s top football clubs.”
