[5] After signing his Kolpak deal, Olivier expressed his hopes to one day play for the England cricket team.

[6][7] When the Kolpak deal ended in 2021 due to Brexit, Olivier continued as an overseas player for Yorkshire and was selected in South Africa's Test squad ahead of their series against India.

[15] In March 2019, while playing for Yorkshire against Leeds/Bradford MCCU in the 2019 Marylebone Cricket Club University Matches, Olivier took his 400th first-class wicket.

[16] In September 2019, Olivier was named in the squad for the Jozi Stars team for the 2019 Mzansi Super League tournament.

He replaced Kyle Abbott, who earlier had quit international cricket to sign for the English team Hampshire as a Kolpak player.