The Borussia Dortmund defender is a reported target for Barcelona but his team-mate is anxious to keep him at Signa Iduna Park, describing him as a "complete player"
Hummels has long been linked with a move to Barcelona following another strong campaign at the heart of the BVB defence but, after Mario Gotze agreed a €37 million move to Bundesliga rivals Bayern Munich, Reus is eager to keep the remainder of the squad intact.
"I hope no player leaves Dortmund - not Hummels nor anyone else," he told AS. "We're a family and we have a contract. The atmosphere in the dressing room is very good and we feel well in the club and the city."
Reus went on to describe Hummels as a "complete player", paying particular tribute to his prowess in either penalty area.
"In the coming years he will be world class, but now, despite his age, he already has experience," Reus continued. "He has great vision to take the ball from the back and become a good creator for attacking play.
"Moreover, in case anyone forgets, Hummels is also good in front of the opposition goal, so that makes him a complete player."
Dortmund were held to a 1-1 draw by champions Bayern Munich in Saturday's Bundesliga clash at Signal Iduna Park.