Kenny Miller has been warned he will need to get off to a good start to win over the sceptical Rangers support, according to a fans' spokesman.
The former Celtic striker, who had a spell at Ibrox under Dick Advocaat in 2000/01, is back with Rangers after signing on a three-year deal from Derby.
Miller's move has been deemed 'unpopular' by David Edgar of the Rangers Supporters Trust, but he is ready to back manager Smith's judgement of the Scotland international.
Edgar said: "Kenny has obviously played for Rangers before, and Celtic, but some of his best displays during his career have come under Walter Smith and Ally McCoist when they were in charge of Scotland.
"So it would seem that if anyone is going to turn him in to a top-class striker then it will be those two, especially Ally, who, let's face it, knows a bit about being a striker.
"The fans will back Walter Smith's judgement even though a section of them don't particularly like Miller.
"They accept that Walter has the right to bring in the players that he wants to bring in.
"Kenny will get the opportunity to turn the fans around but it was an unpopular signing and it would be naive to think otherwise.
"It has nothing to do with him being an ex-Celtic player. The fans are simply not keen on Kenny Miller and he will need to get off to a good start."
Edgar admits Miller should be applauded for being prepared to go through with the controversial switch.
"I'm sure Kenny Miller himself knows how the fans feel about his arrival," he added.
"And in many ways you have to hand it to him, he must have a strong character. He is aware of the feelings of the fans but it doesn't appear to have affected him.
"But it is up to him to prove himself. He has to get the fans onside by delivering the goods."