Gustavo Martin Emilio Hamer (born 24 June 1997) is a professional footballer who plays as a midfielder for Sheffield United. Born in Brazil, he has represented the Netherlands at youth level.
After moving to the Netherlands as a child, Hamer began his career at Feyenoord where he progressed through the youth system. He made two appearances for the first team before being loaned out to FC Dordrecht for the 2017âÂÂ18 season.
Born in Brazil, Hamer moved to the Netherlands as a child. As a youth player he was rejected by ADO Den Haag before joining Feyenoord's youth academy. He progressed well at Feyenoord, and earned caps for both the Netherlands U18 and U20 sides. Hamer made his professional debut on 2 April 2017 in an Eredivisie match against Ajax, coming on as an 89th minute substitute in a 2âÂÂ1 loss. Three days later, on 5 April 2017, he would make his second and what would prove to be last appearance for Feyenoord in an 8âÂÂ0 win against Go Ahead Eagles.
On 7 August 2017, Eerste Divisie club Dordrecht announced the signing of Hamer on a one-year loan deal. He made 39 appearances in all competitions for Dordrecht as they missed out on promotion after qualifying for the playoffs.
After the conclusion of his loan at Dordrecht, Hamer joined PEC Zwolle from Feyenoord on 2 May 2018. He signed a three-year contract with the club. Hamer made his debut for Zwolle on the opening day of the season, playing 90 minutes in a 3âÂÂ2 loss against SC Heerenveen. He would go on to make 23 appearances in 2018âÂÂ19 as Zwolle finished 13th in the Eredivisie. On 11 August 2019, Hamer scored his first goal for the club, netting with a direct free-kick in a 3âÂÂ1 loss to FC Utrecht. His second season with Zwolle was cut short after the Dutch FA cancelled the remainder of the 2019âÂÂ20 season due to the COVID-19 pandemic. Hamer finished the season having made 25 appearances and scored 4 goals.
On 3 July 2020, English club Coventry City completed the signing of Hamer for a fee exceeding ã1.5m. He made his debut in a 1âÂÂ0 EFL Cup victory against Milton Keynes Dons on 5 September. In his fifth appearance for the club, a 3âÂÂ1 loss against Bournemouth, he was shown a red card for violent conduct which resulted in a three-match suspension. He returned from suspension on 27 October against Middlesbrough and three days later scored his first goal in a 3âÂÂ2 win over Reading.
On 17 May 2023, he scored the winning goal in the second leg of the Championship playoff semi-final against Middlesbrough to set up a game against Luton Town for the right to play in the Premier League and scored the equalising goal to make the score 1âÂÂ1, before being defeated on penalties.
On 12 August 2023, Hamer signed a four-year deal with recently promoted Premier League club Sheffield United for an undisclosed fee, believed to be in the region of ã15 million. On 27 April 2025, he was named EFL Championship Player of the Season.
Hamer was born in Brazil, but adopted and raised in the Netherlands. He is a youth international for the Netherlands at the U20 level.
Feyenoord
Individual