The organization lost its major sponsor, the Varteks clothes factory, and changed its name to NK Varaždin in June 2010, just a month before Pajač signed a scholarship contract with them.

[4] He made his debut for the first team against Lusitanos on 30 June 2011 in the first qualifying round of the 2011–12 UEFA Europa League as a second-half substitute.

Varaždin won the match 5–1, with Pajač sent-off in the stoppage time for a professional foul.

[6] After the financially struggling Varaždin was expelled from the 2011–12 Prva HNL, Pajač signed a five-year contract with Lokomotiva in June 2012.

On 31 January 2019, Pajac joined Empoli on loan with an option to buy until 30 June 2019.