Despite the pair currently plying their trade elsewhere, a United source recently told the Daily Mirror both players have a bright future at Old Trafford.
"There were a number of clubs interested in buying Januzaj, but all those offers were rejected out of hand," the source said.
"We had no interest in selling a player who will be a big part of United's future.
"The manager has assured him of that. The move to Dortmund will help his development and he will return to the club a better player because if the minutes he will get on the pitch.
"If there was no future for either player, they would have been sold rather than sent out on loan."