The American keeper is back in favour at Old Trafford after spending over five months in the wilderness following his early-season Champions League blunder against Lyon.
It was the latest in a series of mistakes which undermined Howard's superb start to life in England and offered Roy Carroll the chance to cement himself in the number one slot.
After getting away with an outrageous blunder in the New Years' Day encounter with Tottenham Carroll's crucial mistake in the key European clash with Milan at Old Trafford in February marked the end of the Ulsterman's stint in the side.
The switch left Howard a maximum 14 games to convince Ferguson he has no need to bring in yet another new goalkeeper in the summer by regaining the form he showed immediately after his arrival from Major League Soccer in 2003.
'I am aware that right now is the time for me to do the business - and that is what I plan to do' he said.
'I am certainly a much better goalkeeper than when I came to the club but I feel my best days are ahead of me.
'What I would really love is to play for this club for the rest of my career and cement myself the way that Roy Keane Paul Scholes Ryan Giggs and Gary and Phil Neville have.'
If he achieves that Howard will also earn the right to stand alongside Peter Schmeichel as one of the greatest goalkeepers United have ever had.
It is the 26-year-old's curse that he like the other six men who have attempted to hold down a regular starting berth following the great Dane's exit in 1999 are constantly compared to Schmeichel who will go down as one of the world's best.
Howard insists he judges himself by no-one's standards other than his own although he has reason to be quietly pleased with his most recent efforts.
Saturday's 0-0 draw with Blackburn may have snuffed out any lingering Old Trafford title ambitions but it did represent a fourth clean sheet in the six games since Howard ousted Carroll for the Premiership visit of Portsmouth.
One first-half save from Steven Reid in particular stood out proving that Howard's reflexes are still sharp and the high-profile mistakes earlier in the season have not left a lasting legacy.
'Peter Schmeichel did some amazing things here' he said. 'He is a legend and every club in every sport will have people who go down in history as being incredible.
'But I try to live up to my own standards. I don't buy it when people label me as the greatest - just as I don't when people label me a flop.
'You are always going to have dips and blips in form. It is how you manage the dips how to minimize them and get back on the upswing.
'I am pretty strong-minded and for me the biggest disappointment about making mistakes is that I haven't done my job to the best of my ability.
'Things do get magnified and embellished but that is part of football and doesn't just affect goalkeepers. Outfield players make mistakes and get caned as well.'
While United continue to be linked with a succession of keepers Espanyol's Carlos Kameni is the latest Howard may yet save Ferguson some of his meagre transfer budget.
'When I came to England I was more of an athlete wearing goalkeeping gloves' he said.
'But in my time here because of the specific training we do and learning things like positioning I have become more of an athlete I feel I have become a goalkeeper.'