"He didn't have to work for this talent. Ronaldo must work for this - work with this body, work with everything.
“For me, Messi has this talent. That's also for Shaqiri.
Liverpool news: Shaqiri has been likened to Barcelona star Lionel Messi (Image: GETTY)
Liverpool news: Shaqiri scores his second goal for the Reds vs Fulham (Image: GETTY)
Liverpool news: Shaqiri is naturally gifted like Messi according to Thorsten Fink (Image: GETTY)
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"He has this talent to play. If he works very professionally, he can be the best player for Liverpool - not only a player.
“Every time the aim must to be better and make the next step. If you play for Liverpool not every week, it cannot be enough for him. His aim must be to play every week."
Shaqiri was a shining light in a dismal Stoke side that were relegated from the Premier League last season under Mark Hughes and Paul Lambert.
But now the Swiss international is surrounded by players of top quality and Fink has challenged him to take his game to the next level.
Liverpool news: Fink managed Shaqiri at Basel (Image: GETTY)
“With his possibilities, it's not enough to play for Stoke,” he added.
“He can play for the biggest club in the world because of the talent he has. That's what I wanted.
“[He has] Everything for the perfect footballer.
“The only thing is: 'Can you make the next step, Xherdan?' If you want to play for Liverpool or Real Madrid, Bayern Munich or Man United, and you want to play every time - not just be the man who sits on the bench - you need more professionalism."