Walusimbi made his Amakhosi debut at left-back ahead of Siphosakhe Ntiya-Ntiya in the 1-0 loss to SuperSport United in the MTN8 semi-finals on September 1.
The 29-year-old Ugandan was captured from Kenyan giants Gor Mahia just before the transfer window closed.
Obua, who shone for Chiefs from 2005 and 2008, says his compatriot provides plenty of options for coach Giovanni Solinas.
"He is a good player and a versatile as player as well," Obua told KickOff.com from Kampala.
"He can play more than one position. It is important to play in various positions nowadays as footballers and he can do that very well for the team.
"I think because Kaizer Chiefs is the biggest club, my advice to him is to go there and play for the club because supporters can quickly turn against you if you don't play well.
"We all know the fans; if you don't play well in three of four games they'll turn against you. But I'm confident that he'll do well and adapt easily at Chiefs.
"Why I'm saying that is Chiefs are set up under Bobby Motaung (Chiefs team manager) and 'Chicha Guluva' (Chiefs supremo Kaizer Motaung). He'll adapt very well because it is a well run and professional club."
Obua, who won the PSL Footballer of the Season and KICK OFF Footballer of the Season awards in 2006/07, scored on his Soweto Derby debut against Orlando Pirates in October 2005.
He added: "If he scored in the Derby it'll be great for him but he is not a proven goal scorer.
"He can overload in the middle and give the team different options as I said. He'll add that unique balance in the team."
Obua completed his UEFA B license last year in Scotland as he looks to enter coaching.