Despite only been at the Hertfordshire club 58 days it appears that he is surplus to requirements after the one time Blades striker has failed to fit into Aidy Boothroyd's style of play.
Kabba, 25 joined the Blades during in November 2002 for a fee of £250,000 from Palace and became an instant success, netting on his debut in a 5-0 mauling at Bradford City.
However at the end of the season, after taking United to the FA Cup Semi-Final and Division One Play-Off Final he was injured in training and never really recovered.
He left Bramall Lane last January for a fee of £500,000. In all Kabba played 54 (+ 34 as sub) and scored 23 goals in the process.