Gerard Houllier says Aston Villa's ambition was key to him agreeing to succeed Martin O'Neill as manager.
Houllier, 63, who has signed a three-year deal, added that he was fit and healthy after heart problems in 2001.
But it will be up to a fortnight before he can take charge of the team as he has yet to agree a departure date with the French Football Federation.
"I had a good and safe job but Villa's ambition made me feel I wanted to be part of the team," he stated.
As Houllier negotiates his exit from the role as the FFF's technical director, he will not be present for Monday's trip to Stoke in the Premier League, with caretaker manager Kevin MacDonald running the team in his stead.
He will, though, be at Villa Park for Bolton's visit in the league on 18 September and could take charge of the team for the midweek Carling Cup clash against Blackburn, or, failing that, the league trip to Wolves on 26 September.
After that, MacDonald will return to his job as reserve team boss.
However, Houllier added that he was disappointed MacDonald, who took over the reins following O'Neill's shock departure in August, had rejected the chance to work as his assistant.
"I am working on naming an assistant manager," the Frenchman continued.
"Joint management doesn't work, but in some capacity as assistant manager he would have been helpful. He could also have maybe learnt the trade and, who knows, taken over from me.
"But I understand his decision, he's a nice bloke so I won't hurt him - I told him I'd like him to stay at the club."
Under MacDonald, Villa won two of their opening three Premier League fixtures, a foundation on which Houllier is keen to build.
"I'm here to meet anyone who says it's not a good club, so let's try to make it better," enthused Houllier.
"The facilities are first class, the training ground is really good, there is a vision for the future.
"It's down now to us to work hard to bring success and joy to the fans. The fans are most important, they are passionate, vocal and fantastic."
Liverpool have not lost at Villa Park since Feb 1998, I want to put this right. This is one of my priorities
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