The 'Home of Cricket' played host to the archery event at the recent Olympic Games in London, which has resulted in many portions of the outfield having to be relaid.
"The outfield will look very different from how it does normally ahead of a Test match, like a patchwork quilt, but there are no issues as far as we are concerned - it is fit for play," an MCC spokesman told the Guardian.
"As well as being passed by the match referee, we've had the MCC's young cricketers running and fielding out there and they have not reported any difficulties or anything which could cause anyone to get injured."
The MCC added that there had definitely been no damage done to the main square, which was completely protected during the Games.
South Africa hold a 1-0 lead over England after taking the first Test and managing a draw in a rain-affected second Test.