The former AS Vita Club right fullback has signed a two-year contract on a free transfer.
Shabani joins his former AS Vita teammates, in particular Rossein Tuisila Kisinda and Mukoko Tonombe, who arrived at Jangwani Street squad in August last year.
The marauding fullback is set to be announced as a Yanga in Dar es Salaam on Thursday at a press conference set for a hotel at city centre.
Yanga look to build a squad to challenge for honours next season.
He was a key element in the head coach Florent Ibenge squad.
An undisputed leader and captain, he played in the ranks of AS Vita, popularly known as 'Black Dolphins', for three seasons both in the Congolese national championship and in the CAF Champions League.
Shabani has emerged as one of the most in-demand defenders in Africa after his performance in CAF Champions League for AS Vita this season.
Egypt's Al Ahly, South Africa's Mamelodi Sundowns and Simba of Tanzania were mentioned as contenders for his signature, for example.
But Yanga have charged into the race to sign him and appear to have been victorious.
Reports from DR Congo last month revealed that Yanga had identified Shabani as a top target in their search for a fullback to help them in the long-term.
Then two weeks ago, it was claimed that they had stepped up their efforts to sign Shabani by sending one of their top officials to Kinshasa for negotiations.
At Yanga, Shabani will be competing with Kibwana Shomari for the right-back role while Paul Godfrey is likely to be deemed surplus to requirement and is likely to be released before the start of the season.
The Green and Yellow side have been strengthening for the next season and are aiming at improving every department.
It is for this reason the team is moving fast to make signings that will help the technical bench achieve their objectives next season.
Last weekend they confirmed their appearance in next season’s CAF Champions League following a hard fought 1-0 victory over Simba at Benjamin Mkapa Stadium.