Career
Cotman started his career in his hometown club Triglav from Kranj. He joined the youth ranks of English Premier League side Wolverhampton Wanderers in 2010, signing a professional deal in 2012. However, he did not make an appearance for the senior team before his contract expired and he returned to his homeland.
On 21 October 2013, he joined the Slovenian champions Maribor.
He made his fully professional debut in the Slovenian PrvaLiga on 17 May 2014 in a match against Gorica. Cotman was capped for Slovenia at all youth levels from U15 to U21.