Kelle Roos

Early career

Roos began his career at amateur Dutch clubs VV Toxandria, VV Trekvogels, Juliana '31 and Quick 1888, before moving to PSV Eindhoven in 2005. After six years at the PSV Academy he moved to Willem II, where injuries hampered his progress, before moving to N.E.C. in 2012. At the start of the 2013–14 season, Roos had a trial at English Championship club Birmingham City and then at League One side Bristol City. He competed with Elliot Parish for the chance to win a permanent contract, with manager Sean O'Driscoll then signing Parish permanently. O'Driscoll also wanted to sign Roos and loan him out, but financial restraints left him only able to sign one of the pair. Having failed to earn a contract and unable to join a league side as the transfer window had closed, Roos returned to the Netherlands and signed for amateur Hoofdklasse side Nuenen.

Nuneaton Town

Having received offers from the Netherlands and England, Roos went on to join Conference Premier side Nuneaton Town on 8 November 2013, signing a contract until the end of the 2013–14 season. His "Boro" debut was delayed by almost two weeks as the club waited to receive international clearance. There were initial rumours and controversy over his debut, with led chief executive Ian Neale to deny that any pressure was placed on manager Kevin Wilkin to play Roos. His debut came on 23 November, in a 1–0 victory over Chester at Liberty Way, where he earned praise for a "fine" late save from a…

While at PSV, Roos played for the Netherlands at under-15s, under-16s and under-17 levels.

Roos grew up in Rijkevoort and excelled at both football and tennis as a child, but decided to focus on football at the age of 13, having settled as a goalkeeper the previous year. Despite being dyslexic, he worked hard at school to qualify for a place at university.

Roos was accompanied by his partner Nadine Hanssen on his move to Aberdeen. Nadine decided to restart her football career with Aberdeen Women after the birth of their son Romeo in December 2021.