The Black Cats striker thinks fans will love what the player he worked with at Tottenham and Portsmouth will bring to the team.
Unsurprisingly, the England international had plenty of good things to say about a player that he has met up with during his club career at four different points, and the attacker also revealed that he encouraged Sunderland boss Dick Advocaat to sign the 29-year-old if there was any possibility of it happening.
“Younes is a winner and a natural leader on the pitch and he’ll come to the club and bring that attitude – he’s a great signing for us,” Defoe told the Sunderland website.
“Even in training he was always going for it, running, tackling, heading, attacking – fans will love what he’ll bring to the team.”
Defoe may have played a greater role in Kaboul's switch to Wearside than that of a welcoming former teammate, with the Frenchman quickly arriving at the Stadium of Light after the mooted deal for Belgian Nicolas Lombaerts fell apart.
“Dick Advocaat asked me what I thought of him and I told him if you can get him he’ll be a top signing,” Defoe added.
“He’s a great guy, obviously I played with him at Tottenham for a few years and then again at Portsmouth. He’s a top player and a top professional.”
The 32-year-old's comments follow on from what Kaboul himself said about the prospect of working with Defoe again at Sunderland.
And it is clear that the two have huge mutual respect and chemistry, something that can only be a good thing for Advocaat's side next season.
Defoe played for Spurs 357 times, while Kaboul played 141 games for the North Londoners, with both taking in two spells at the club, and with much of that time spent in or around the top six, Sunderland fans will be hoping the duo can lead the Black Cats into a positive season next year.