It is understood that several discussions have been conducted between Nthethe, his representative and Celtic about a possible contract extension, following his name being heavily linked to Kaizer Chiefs and Orlando Pirates.
Phunya Sele Sele’s technical director Mich d'Avary told KickOff.com recently that the two parties had agreed terms with only the defender’s signature missing from the paperwork.
"I have not yet signed a contract extension for Celtic. We are still in ongoing discussions and are we are yet to agree on terms," 'Mr Cool' says.
When asked about whether he is guaranteed to sign should Celtic produce a contract with his desired conditions, Nthethe had no doubt in his mind what the answer would be.
"Definitely. There will be no problem in renewing," he says.
"I have been very happy since arriving at the club and should we agree on one thing, then there is no doubt in my mind that I will renew."