Sundowns completed the signing of Sibusiso Vilakazi from Bidvest Wits this week, but the Brazilians are not done as they are lining up a transfer deal for a star player.
Steven Pienaar and Anele Ngcongca have been linked with moves to the Absa Premiership champions.
“There is another player who is coming in, he can play as a 10 or as a nine, a top player,” said Mosimane.
“I can’t talk about players that belong to another team. Anele would like to come to us, we will see.
“As for Steven, I don’t know, Pienaar is a good player, but he is still thinking.
“Pienaar can retire also, but it would be good to have him…we will see.”