Harry Redknapp has admitted trying to keep QPR in the Barclays Premier League will be his toughest challenge yet.
The former Tottenham boss has taken over a side rooted to the foot of the table, with just four points from 13 games and without a win all season.
He has saved Portsmouth from relegation and took a Tottenham side from bottom of the table to the Champions League the following season.
Be he said: "We mustn't kid ourselves, this is much tougher than those two jobs in my opinion, but I'm optimistic we can pull it off.
"I want to be successful here, really badly. I want to keep this team in the Premier League. If the players try as hard as I am going to try we'll be successful."
Redknapp confirmed a deal was being done to bring in long-time assistants Joe Jordan and Kevin Bond to assist him.
And he warned the players he would not tolerate a lack of effort.
"We've got to do better to give ourselves any chance of getting out of this me...