Harry Redknapp insists that head of football operations Les Ferdinand could do his job at Queens Park Rangers after resigning on Monday.
Redknapp, 67, quit the club the day after the January transfer window closed, citing his need for double knee replacement surgery in the near future.
His decision on Tuesday came just hours after QPR's failure to land a number of targets -- most notably Spurs striker Emmanuel Adebayor and West Ham winger Matt Jarvis -- but Redknapp played down that as a factor and denied a rift with owner Tony Fernandes.
Ferdinand will now take charge at Loftus Road alongside former Spurs coach Chris Ramsey on a temporary basis, but Redknapp says there is no reason Ferdinand could not become the permanent boss.
"It's up to Tony and the shareholders who they decide to pick," he said in an interview with Sky Sports News. "Les is taking over and I am sure Les can do the job without a problem. He is a football man, knows the game, has been a top player. I think the players are there and, with one or two coming back this week, I think that will make a massive difference to the team."
QPR are 19th in the Premier League with 19 points from 23 games, although they are just a point off 17th.
Redknapp failed to save the club from relegation in 2013 but led them back to the top flight at the first attempt. They have failed to maintain that momentum this term but Redknapp claims that injuries played their part.
"(Midfielder) Sandro's back this week, Yun (Suk-young) is back at left-back," he said. "We are short of a front man to help Bobby (Zamora) and Charlie (Austin), but (Eduardo) Vargas can play there.
"It was not a case of taking someone in. When I took over, there were an awful lot of players who they had to get rid of, who were very expensive. I did not want to see them get in that position again.
"I did not push Tony to do any deals and that was certainly not any factor in me deciding to call it a day. I could hardly walk this morning."
Redknapp, who won the FA Cup in charge of Portsmouth and has also managed Bournemouth, West Ham, Southampton and Tottenham, now intends to take time out but is confident he will be back.
"I still don't think I'm finished with football. When I've had the operations, I'll be looking for work again, I know that," he said. "I can't imagine my life without it. But right now, I've got to make my health the priority.''
Another former Spurs boss, Tim Sherwood, is the early bookmakers' favourite to succeed Redknapp.
Information from the Press Association was used in this report.