The 22-year-old defender travelled back with the squad from the tour of South Africa having been so impressive against us for Orlando Pirates.
The club hopes, following successful completion of negotiations, medical and work permit, we will be able to announce his transfer.
Already captain of South Africa, Mbulelo, also known as 'Oldjohn' after his mother's maiden name, played his first 70 minutes at the Lane in Sunday's 0-0 draw against Sporting Lisbon.
"It was always going to be a test for him against Sporting, they'd just beaten United 3-1 and they are a top, top side," reflected boss Glenn afterwards.
"But he did himself a lot of good. For a young boy to come over here and just pick the reins up as he has, it's not easy, but he's done it with some aplomb.
"He's got to talk more out there, he's a bit shy, a bit quiet and we've got to get him out of his shell a little. But as a defender and a user of the ball, he's impressed.
"He's done nothing negative at all, it's all positives and we just hope things can be sorted out."
Glenn Hoddle has praised the way Mbulelo Mabizela has conducted himself in his short time at the club.