Rashford branded Sancho "a great player" when asked about a potential move to United before calling his fellow Englishman "creative" and "imaginative".
"I think our link-up play would be good. Sancho is a great player, he's like the new generation of player. He's exciting to watch him become the player he is developing into. Hopefully we can all play together, that would be good," Rashford told Bleacher Report during an Instagram Live.
"Sancho plays off the cuff, he's creative, imaginative, and those are the things that you need to do well in this generation [of football]."
Sancho, who has a contract with BVB until the summer of 2022, has scored 17 times and registered 19 assists in 35 appearances at club level during the 2019-20 campaign.
Liverpool and Chelsea have also previously been credited with an interest.