The former Newcastle and Manchester City holding midfielder is backing the summer signing for big things.
Now, a fellow German and former Liverpool midfielder in Didi Hamann has been signing the praises of the Liverpool star, suggesting he might one day replace the likes of Bastian Schweinsteiger and Sami Khedira in the German national team.
He told Liverpool's official website:
"Schweinsteiger is still around, you have got Khedira, the Bender brothers. So in that position there are a number of players. There is huge competition.
"But he is a young lad and if he plays well for Liverpool, if he puts in the performances week in, week out that he is at the moment then I'm sure it won't be long before the manager gives him a call.
"I'm pretty sure, if he develops the way he has over the last two years and keeps doing that, sooner rather than later we'll see him in a national team shirt. He's a player that is needed in every team.
"He is physically strong, a good passer and technically gifted. Once one or two of the older players in the German team retire, I'm sure his time will come and we'll see him in a German shirt."
Hamaan himself played over 50 games for his country between 1997 and 2005, whilst he also spent seven memorable years with Liverpool - winning the Champions League in 2005.
So his backing will no doubt be a big boost for Can, who has had his teething problems at Liverpool. So far he has played just 585 minutes of football in the Premier League, after struggling with injury during the early stages of his Liverpool career.
Can already has eight caps for the German under-21 side but is yet to play for the senior side.