Matovu has been training with the club for the past four days and has since agreed terms with promotion-chasing Eagles.
However, work permit issues means he could only watch on from the stands at the Harry Gwala Stadium last night as Kosta Papic's side narrowly lost 2-1 to SuperSport United in the Nedbank Cup last-32.
"He [Sula] signed a contract and he's now working on getting his work permit and we are working on his ITC [international transfer certificate],” Papic told reporters after his side lost to Matsatsantsa.
"It'll be coming [yesterday] or [today] and he'll be okay [to play].”
Recently, KickOff.com revealed Eagles had signed former Orlando Pirates midfielder Isaac Chansa, who was also watching the Ke Yona clash from the stands, along with NFD top scorer Sedwyn George.
Papic, who previously coached Chansa during their time at Pirates, also revealed that Eagles are working on the Zambian’s ITC ahead of Saturday’s NFD clash against FC Cape Town.
"Unfortunately, the ITC is not coming at the right time and I'm hoping for Saturday that he [Chansa] will be okay [to play].”
Matovu joined Chiefs at the start of last season but struggled for game-time, and was eventually released by Amakhosi along with compatriot Ivan Bukenya, Siboniso Gaxa, Philani Cele, Morgan Gould, Levy Mokgothu, Ovidy Karuru and Shandukani Mulovhedzi.