Career
Kotwica began his career with Cheltenham Town and made his professional debut in a 2–2 draw with Burton Albion on 3 August 2013. Kotwica scored his first professional goal for the club in a 1–1 draw with Mansfield Town on 13 December 2014. Prior to the 2015/16 campaign he joined Southern League Premier Division club Cirencester Town on loan until January.
On 9 December 2015 it was announced that his contract will not be renewed at the end of the season.
On 1 January loan was extended till the end of the season.