Career
In his first top league season, he made 21 league appearances with 2 goals, becoming, along his countryman Stefan Savić, one of the most influential players in the club The following season, 2010-2011, followed the tendency with Kajević making further 26 league appearances with 3 goals. On 19 January 2012, Kajević joined the Swiss team Football Club Zürich., where he played for four years.
On 22 December 2015, HNK Rijeka announced that they have signed Kajević.
His natural position is central midfielder, although he can also play the role of defensive and left midfielder. He was also part of the Montenegrin squad at the 2009 Mediterranean Games.
BSK Borča.