The Munster man missed the second test after being shown a red card in the opening game
Jos Schmidt has named his team to face South Africa in the deciding test of the series at Nelson Mandela Bay Stadium on Saturday afternoon.
After missing the last game through suspension, CJ Stander returns to the backrow along with Jordi Murphy and Jamie Heaslip.
Luke Marshall also returns to the team, while Tiernan O'Halloran starts at fullback, having come off the bench in the previous game.
That sees Matt Healy named among the replacements, and if he does make an appearance, every member of the touring squad will have gotten game time on the pitch.
The team in full is:
15. Tiernan O'Halloran (Buccaneers/Connacht)
14. Andrew Trimble (Ballymena/Ulster)
13. Luke Marshall (Ballymena/Ulster)
12. Stuart Olding (Belfast Harlequins/Ulster)
11. Keith Earls (Young Munster/Munster)
10. Paddy Jackson (Dungannon/Ulster)
9. Conor Murray (Garryowen/Munster)
1. Jack McGrath (St. Mary's College/Leinster)
2. Rory Best (Banbridge/Ulster) (capt)
3. Mike Ross (Clontarf/Leinster)
4. Iain Henderson (Ballynahinch/Ulster)
5. Devin Toner (Lansdowne/Leinster)
6. CJ Stander (Munster)
7. Jordi Murphy (Lansdowne/Leinster)
8. Jamie Heaslip (Dublin University/Leinster)
16. Sean Cronin (St. Mary's College/Leinster)
17. Finlay Bealham (Buccaneers/Connacht)
18. Tadhg Furlong (Clontarf/Leinster)
19. Ultan Dillane (Corinthians/Connacht)
20. Rhys Ruddock (St. Mary's College/Leinster)
21. Eoin Reddan (Old Crescent/Leinster)
22. Ian Madigan (Blackrock College/Leinster)
23. Matt Healy (Connacht)