He reckons it would all have been different had Watson not missed a penalty in the club's Championship play-off semi-final, second leg against Bristol City in 2008.
Watson, now at Wigan, had the chance to put the Eagles 3-2 ahead on aggregate and en route to the Prem. But he hit a post and Palace went down in extra-time 4-2 on aggregate.
Jordan declared to The Sun: "That defeat was a pivotal moment. Had Ben Watson scored, things would have been totally different."
Jordan does not know if he will return to football.
He said: "People ask what I have been doing for the last nine months. I'd like to say counting my money. But these days it doesn't take that long!"