His absence has opened the door for Ter Stegen to see regular minutes in a World Cup year, with the 25-year-old enjoying another impressive domestic campaign with Barca.
Kroos has watched on from afar as his close friend has helped his side to eclipse the efforts of those in Madrid, with the classy midfielder quick to talk up the qualities of a man branded ‘Messi with gloves’.
“I like Ter Stegen a lot,” Kroos told AS.
“Marc is one of the best in the world and without doubt he is the perfect keeper… for Barcelona.
“The best thing about Ter Stegen is that he makes very few mistakes. He’s perfect for Barca because he starts moves from the back and there aren't many keepers who can do that.”
While saluting ability of a club rival, Kroos has also paid homage to a couple of star turns working alongside him at Santiago Bernabeu.
The World Cup winner added on the South American duo: “They are two of the best in the world in their respective positions.
“At Madrid it has been evident how important Casemiro is in maintaining the balance of the side, and what can I say about Marcelo? He is the best left back on the planet.
“Brazil are definitely among the favourites to win the World Cup.”
That was the case four years ago, though, and Germany dashed the dreams of the home nation with a 7-1 demolition of Brazil at the semi-final stage – with Kroos netting twice in a remarkable contest.