He said: "We have matches that give us confidence, even if that confidence isn't going to blind us.
"We're pleased to have young players, their maturity will come over time."
After three matches against South Africa in the summer, Les Bleus will take on the Springboks again in November.
Also heading to France are New Zealand and Japan giving Les Bleus the chance to build towards the 2018 Championship when they will have three games at home, including this year's top two England and Ireland.
Peter O'Mahony was named man of the match against England last month
21 April 2017, 7:22pm
Peter O'Mahony's performance in the RBS 6 Nations finale for Ireland against England was crucial to his selection for the British & Irish Lions on Wednesday, Ireland and Lions defence coach Andy Farrell has revealed.