Speaking to Norwegian broadcaster TV2, the 53-year-old was honest when it came to the 23-year-old’s future.
Wilder said: "I think this [Sheffield United] has always been a springboard for Sander.
"He wants to play at the highest level, he wants to play Champions League regularly and he wants to play for a top team.
“We gave him an opportunity to show off his skills and he has taken it. If he plays well, he makes us a better team, but I know that day will come.
“I know Sander won’t be here until he’s 32, but we enjoy working with him and hopefully he has a few games left as a Sheffield United player.
"I understand, if he goes and if it happens, then it happens with our blessing.
“I wish Sander all the best. Do I think he can play for a top club? Absolutely, but for that to happen, he has to keep doing well here.”
Fast forward to now, the Blades look destined for a return to the second-tier and speculation surrounding Berge has again resurfaced.
As per Jeunes Footeux, Arsenal and Tottenham Hotspur are eyeing a potential deal for the Norwegian midfielder.
The report claims United are “ready” to sell Berge for €26million (£22.2m), just 18 months after his club-record move from Belgian side Genk.
While the Blades have struggled on the pitch this term, Berge has been forced to watch on from the sidelines since mid-December due to injury.
Here are the latest transfer headlines from Sheffield United and their Premier League rivals:
"He wants to play at the highest level, he wants to play Champions League regularly and he wants to play for a top team.