Former Sunderland chairman Niall Quinn has praised but admitted he would not have considered him for the position.
Quinn became chairman at the Stadium of Light in 2006 and was
"I don't know Gus, but from outside I really like him and I think it's the right fit," Quinn told BBC Look North.
"But I have to admit, if I was still chairman I don't think he'd have hit my radar so credit to Ellis for that."
In 2006, as leader of the Ireland-based Drumaville Consortium, Quinn fronted the takeover over of a club he had served as a player from 1996 to 2002.
He appointed Roy Keane as manager and the club won the Championship title, but Keane left in 2008 and Ricky Sbragia took charge until the end of the season, before Steve Bruce was recruited from Wigan.
When Martin O'Neill became boss in December 2011, Quinn was no longer chairman but director of international development.
Since then, Paolo Di Canio has come and gone after a turbulent seven months in charge.
"When I left the club I did feel Martin was the right man for the job and I'm puzzled as to why it just did not work out," Quinn continued.
"And, as has been publicised, the Di Canio spell was a debacle in many respects. Now Gus Poyet is turning it round."
Poyet's Sunderland lost 4-0 to Swansea in his first game as manager but since then have experienced an upturn in form.
They against Newcastle and responded to a by and in the Premier League.
"He seems to have a real thirst and vitality to make it work, buying into the region like I did when I first went there," Quinn said.
"To take over a team down at the bottom of the Premier League, supposedly doomed to relegation and have them playing some beautiful football against Man City tells me something fantastic is going on in that dressing room."