Comitis recently revealed to snl24.com/kickoff that Manyama, who is rated highly by Downs coach Pitso Mosimane, has attracted interest from China.
The former Ajax Cape Town boss is sticking to his guns when it comes to Manyama's availability on the domestic market.
"Sundowns must pay me R30 million if they want Manyama not R10 million, otherwise they must stop talking. I can also offer Sundowns R10 million for [Percy] Tau. I will not sell him [Manyama] to a local team, Manyama must play overseas."