Kagere is this season experiencing difficulties securing a place in Simba SC's first team.
Gakumba has therefore come out and asked Yanga officials to be clear if they need the services of his player.
The agent was two weeks ago embroiled in a dispute with some of Simba SC fans and members following allegations against head coach Didier Gomes.
Gakumba claimed Gomes failed to use his player during this season's CAF Champions League's last eight return leg between Simba and Kaizer Chiefs in Dar es Salaam
The agent was recently quoted as saying: "Come on, let's talk."
The statement means he is not ready to see Kagere continue to serve Simba SC for next season, even if the club's management will show interest in signing a new contract with the Rwandan striker.
He noted: "As for his contract with Simba SC, it will come to an end after the end of this season's Premier League after which he will be a free agent. If Yanga needs his services we invite them to speak.''
Kagere signed for Simba SC two seasons ago from Kenya's Gor Mahia, and has always been a threat to opponents in the Premier League.
The forward laid his hands o the Premier League top goal scorer's prize in two seasons in a row.
In this season Kagere ranks third in the list of goalscorers with 11 goals.
He trails striking partner, John Bocco, that has netted 13 goals, while Azam FC's striker Prince Dube leads with 14 goals.
In another development, Simba SC disciplinary committee, chaired by Suleiman Kova, has instructed the club's management to undergo medical tests on its midfielder Jonas Mkude, before handing down a sentence immediately after the midfielder's charges of misconduct.
The committee met on June 5 to hear Mkude's case, which claimed the midfielder did not report to the camp and appeared in practice on May 18, 2021.
The committee has decided to temporarily put the sentence, which was to be handed down on June 7, on hold and make such recommendations.
In a statement, the committee, in all respects, made a recommendation to the club's management, requesting that the player should be taken to Muhimbili National Hospital for medical tests, for a medical report, due to the player's repeated misconduct.
The committee made the recommendations, as soon as it found out that the charges against Mkude are recurring, despite being convicted and given various punishments.
Mkude was represented by advocate Jonas Mfinanga, while Simba was represented by advocate Michael Mhina.
This is the second time Mkude has been suspended by Simba for disciplinary offenses, despite apologizing.
He was first suspended on December 28, 2020, when the club's management said it had suspended him due to misconduct and other issues.
The club's management reached that stage so that the disciplinary committee could investigate the allegations against the midfielder.