document: The Namibian full-backs have been on the fringes of the Premiership side's squad this season, making only two appearances between them.
  Botha, 27, has had his time in Devon disrupted by a broken leg and dislocated ankle in November 2014.
  McGuigan, 26, was signed as a result of Botha's injury and has scored four tries for the club.
summary: Exeter Chiefs pair Byron McGuigan and Chrysander Botha will leave Sandy Park in the summer, the club has confirmed.