Mats Henrik Berne Wieffer (born 16 November 1999) is a Dutch professional footballer who plays as a defensive midfielder or right-back for Premier League club Brighton & Hove Albion and the Netherlands national team.
Born in Borne, Wieffer played youth football for RKSV NEO aged 5 before joining FC Twente's academy at the age of 10. He made one Derde Divisie appearance for Jong FC Twente in the 2017âÂÂ18 season, prior to making his professional debut for Twente on 30 October 2018 in a 4âÂÂ2 KNVB Beker win over VV Noordwijk, coming on a substitute for Aitor Cantalapiedra. He made his league debut in a 2âÂÂ0 win over TOP Oss in March 2019. FC Twente were promoted to the Eredivisie as champions of the Eerste Divisie in the same season, but Wieffer did not appear for FC Twente's first team in the 2019âÂÂ20 season.
In June 2020, Wieffer joined Excelsior on a free transfer, signing a three-year contract with the club. He made his debut for Excelsior on 29 August 2020, replacing Mitchell van Rooijen in a 1âÂÂ6 win against Jong PSV in the Eerste Divisie. He was sent off with a red card in the league game against FC Eindhoven on 9 October 2020 (1âÂÂ1). On 5 February 2021, Wieffer scored his first goal in professional football in a 0âÂÂ2 win against FC Volendam. He was named Excelsior Player of the Year after his first season at the club, winning 26% of the votes. On 29 May 2022, he scored in the penalty shoot-out as Excelsior beat ADO Den Haag in the final of the play-offs to promote to the Eredivisie
In June 2022, Wieffer moved to Feyenoord on a four-year contract. After getting injured in a friendly against Red Bull Salzburg in pre-season, he made his debut for Feyenoord and in European football on 8 September 2022, coming on as a substitute for Javairô Dilrosun in a 4âÂÂ2 defeat against Lazio in the UEFA Europa League. Three days later, he replaced Dilrosun during a 3âÂÂ0 victory against Sparta Rotterdam to make his Eredivisie debut. On 13 January 2023, Wieffer scored his first goal for the club while also providing an assist in a 3âÂÂ1 cup win over PEC Zwolle, what was his first start for the club. He was named Feyenoord Player of the Month for January 2023 and February 2023. On 13 April 2023, Wieffer scored his first goal in a European club competition, scoring the only goal in a 1âÂÂ0 win over AS Roma in the quarter-finals of the UEFA Europa League. He assisted goals of Oussama Idrissi and Igor Paixão on 14 May 2023 as Feyenoord beat Go Ahead Eagles 3âÂÂ0 to secure its sixteenth Eredivisie title.
On 4 August 2023, Wieffer played the full game as Feyenoord lost the Johan Cruyff Shield 0âÂÂ1 to PSV Eindhoven. Wieffer made his UEFA Champions League debut on 19 September 2023, in a 2âÂÂ0 win against Celtic. He scored his first goal in the competition on 28 November 2023, during a 1âÂÂ3 defeat against Atlético Madrid. Ahead of the KNVB Cup final on 21 April 2024, Wieffer suffered a thigh injury, ruling him out for the remainder of the season. Feyenoord went on beat NEC 1âÂÂ0 in the cup final and finish in second place in the Eredivisie. During his time at Feyenoord, Wieffer played 54 league games, in which Feyenoord averaged 2.52 points, recording a joint-record for players in the Eredivisie with over 50 games played.
On 5 July 2024, Wieffer joined Premier League club Brighton & Hove Albion, signing a contract until June 2029. With a reported fee of â¬30 million, it became Feyenoord's most expensive outgoing transfer of all-time. He made his Premier League debut in Brighton's opening match against Everton on 17 August 2024, where he'd register an assist as the Seagulls would go on to win 3âÂÂ0.
On 17 March 2023, Wieffer received his first call-up to the Netherlands senior national team for the Euro 2024 qualifying matches against France and Gibraltar. He made his debut on 27 March as a starter in a 3âÂÂ0 win over Gibraltar. On 21 November 2023, Wieffer scored his first senior international goal in the Netherlands' 6âÂÂ0 win against Gibraltar. A thigh injury ruled him out from participating in UEFA Euro 2024.
Wieffer said that he prefers to play as a number six, but is also able to play box-to-box. He has been praised for his mentality, interceptions, passing and energy and called "the missing link between Feyenoord's offence and defence." In the 2023âÂÂ24 Eredivisie, Wieffer ranked highly for blocks, interceptions, ball recoveries and tackles. He was compared to Moisés Caicedo and Alexis Mac Allister after his transfer to Brighton & Hove Albion. Since April of Brighton's 2024âÂÂ25 Premier League campaign, Wieffer has been most frequently deployed as a right-back by head coach Fabian Hürzeler, a position he quickly grew accustomed to as he ranks in the 95th percentile of right-backs for tackles won and clearances during the 2025âÂÂ26 Premier League.
Feyenoord
Individual