In February 2014, Kušnír signed a one-year contract with FC Tobol of the Kazakhstan Premier League.
[1] He returned to the Czech Republic, joining Sigma Olomouc in February 2015 on a contract until the end of the 2015–16 season.
[2] Kušnír was one of three Czechs, together with Jiří Jeslínek and Tomáš Josl, who joined Romanian Liga II side Rapid Bucharest in the summer of 2015.
After being called up to the national team at the end of 2009, but remaining an unused substitute, on 3 March 2010, Kušnír made his debut for the senior side of his country in the 0–1 loss against Scotland in a friendly match.
He played in the 2011 Kirin Cup Soccer tournament, making the last of his four appearances for the Czech Republic in a 0–0 draw against Peru.