Rovers loan star Sam Johnstone admits he still has his heart set on becoming Manchester United’s number one.
But the 21-year-old goalkeeper is also keen to keep his career options open.
Johnstone, who said he had no hesitation in dropping down to League One to join Doncaster until January, signed a new three-and-a-half-year contract at Old Trafford earlier this year.
“Old Trafford is obviously where I want to be,” he said.
“It is difficult. Obviously [David] De Gea is not much older than me.
“I’ve been there since I was ten years old and sometimes you have to come away and learn your trade, to go back and push.
“It’s every boy’s dream to play for Manchester United and I signed a new contract not long ago,” he added.
“But who knows? We’ll see what happens.”
Johnstone, outstanding on his second Rovers debut at Bradford last weekend, has not ruled out the possibility of a prolonged stay at the Keepmoat Stadium.
He will find out today whether he has been included in the England Under 21 squad for their forthcoming friendles with Portugal and France.