Kammala jumla mai zuwa: An zaɓi Slepyshev na farko a cikin 2011 KHL Junior Draft ta Metallurg Novokuznetsk. Tsakanin lokacin 2012-13 kakar wasa, na biyu a cikin Kungiyar Hockey ta Kontinental, ya koma daga Metallurg zuwa Salavat Yulaev Ufa. Bayan da Oilers suka zaba shi a zagaye na uku (88th overall) na
2013 NHL Entry Draft, Slepyshev ya kasance a Rasha don ci gaba da ci gabansa tare da Salavat.