American investor Ellis Short bankrolled the club's summer transfer spree in 2008 and he is reportedly on the brink of confirming his buy-out later this week.
That buy-out could have been for a Championship club because if other results had gone against them, Sunderland would have been relegated on the last day of the season; a fact not lost on Quinn, who has overseen the spending of almost £80m on the squad in the last two years.
"We need someone with a winning mentality," he stated. "We have got a lot of talent in that dressing room.
"At times, I had to ask myself during the Bolton game, at times during the Portsmouth game and once or twice on Sunday, what are we doing at the bottom of the league?
"But then there were times when I realised why we were."
A growing list of potential replacements is already emerging, with former England manager Steve McClaren, who is currently at Dutch side FC Twente, Croatia head coach Slaven Bilic, Wigan boss Steve Bruce, former Celtic manager Gordon Strachan and ex-Barcelona coach Frank Rijkaard the major names among them.
Former Hamburg manager Martin Jol was also mentioned in conjunction with the post, but has just joined Ajax.
"We had applicants from all over the world at Christmas but the gospel truth is - and being kind to people - I hadn't heard of half of them," added Quinn.
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