Sundowns initially signed Otladisa a year ago from Platinum Stars and immediately loaned him back to Dikwena, before he eventually linked up with the Brazilians in August.
However, he was unable to break into Pitso Mosimane's side and was reduced to playing in the Multichoice Diski Challenge before Umoya struck a deal with the Tshwane giants to bring him to the Mother City.
Isaacs confirmed the deal after Umoya extended their unbeaten run to seven matches in all competitions with a hard-fought 1-0 victory over Maccabi FC at Athlone Stadium on Monday.
“Yes, we have secured Katlego’s services and we are delighted,” Isaacs told KickOff.com.
“He is a player we wanted from the beginning of the season already.
“He initially belonged to Platinum Stars before he moved to Sundowns. He is a very exciting young talent and I’m excited to have such an good player in my squad.
“He will defintely add value add and increase the competition in the squad, you know.”
According to Isaacs, Maccabi made life very difficult for the home side earlier this week. His team needed a last-minute penalty slotted by Roscoe Pietersen to seal three valuable points for the NFD newbies.
“Credit to Maccabi as they came to Cape Town and did not sit back. They came to play and to collect points,” Isaacs explained.
“It was one of those days at the office for us and days like this are going to come and go. I’m especially happy with the character we displayed to turn things round.”
Isaacs has not lost a single match since taking over the reins from Roger de Sa in late November, as he started with a win against TS Galaxy in the Nedbank Cup.
The former Kaizer Chiefs and Ajax Cape Town player says it’s too early to get excited as they have not achieved anything yet.
“Look, one cannot shy away from the work done by Roger when he was in charge,” Isaacs said.
“He has played a big part as well. But ultimately it is up to the players.
“I say to them that every team goes through a bad patch and I’d like to believe that ours is behind us with that string of games we lost earlier on.
“The players must believe in themselves you know. We played against top teams like Stellenbosch, Ajax and Mbombela and we never lost against those so-called title contenders. The players must just believe in themselves,” Isaacs concluded.