The USA international signed on for the champions in the summer from Metrostars and swiftly replaced French World Cup winner Fabien Barthez between the Old Trafford sticks. The robust keeper has been an impressive performer since then, quickly adapting to the culture of the Premiership.
"I think everybody in the Manchester camp has got to be extremely excited about Tim's performances," stated Kasey.
"Really coming out of nowhere and being able to play as well as he has is some achievement.
"He let in four last weekend, but really couldn't do much about it. He will be a bit disappointed, but it is going to happen to everybody and we have all had them."
Kasey revealed that the nine times capped Howard consulted him on the prospect of playing in English football before United's surprise swoop.
"We talked about a lot of stuff even before the Manchester United thing came up. What he was hoping to be able to do in the future.
"Tim is a good level-headed guy and there is no reason why he can't keep that position the next ten years."
Meanwhile, Kasey insists he is reading very little in to United's recent dip in form and points out that, if visiting teams do not perform to the best of their abilities, they are likely to suffer a heavy defeat.
"After the two results they've had you don't want to get on the wrong end of them, that's for sure. They are a quality side and we are going to their place after a couple of bad results.
"You have to be 100 per cent focused on the task in hand because it is a team that, if you don't show up and play well, can punish you very badly. We need to be at the top our game."
Kasey Keller feels that Tim Howard could secure the goalkeeping position at Manchester United for the next ten years.