Botha signed for the Irish province Munster on a two-year contract in February 2011, starting in the 2011–12 season.
[6] Botha signed a six-month contract extension with Munster in March 2015, meaning he will stay with the province until at least December 2015.
[9] Botha started Munster's opening pool game of the 2015–16 European Rugby Champions Cup against Treviso on 14 November 2015, scoring a try in his team's 32–7 win.
[10] On 9 January 2016, Botha ruptured his anterior cruciate ligament during Munster's match against Stade Français.
[12] After leaving Munster, Botha joined French Top 14 club Lyon as a medical joker ahead of the 2016–17 season,[13] before joining Biarritz, who played in the Rugby Pro D2, France's second tier league, ahead of the 2017–18 season.