Loris Karius
Loris Karius is on the verge of completing his move to Liverpool after arriving at Anfield for his medical Getty

Liverpool are set to announce their first summer signing this week after Loris Karius arrived at Anfield to complete his move from Bundesliga club Mainz. Jurgen Klopp has made the goalkeeper a priority signing and rather than being a backup, he will be challenging current first choice Simon Mignolet for a place in the starting XI next season.

According to the Liverpool Echo, the German 'keeper will undergo his medical in the next 24 hours after the two clubs agreed a deal, and will be officially confirmed as a Liverpool player either on Tuesday or Wednesday. Karius has impressed with Mainz in the last four years since breaking into their first-team and will compete with Danny Ward and Simon Mignolet for a starting berth next season.

The young Welshman, who has impressed Jurgen Klopp during his first-team outings this season, could be loaned out yet again to gain further experience through regular first-team football. Huddersfield Town, who play in the Championship, are said to be interested in signing him on a temporary basis next season. Ward's move on loan will leave the German and Belgian competing for a place as Adam Bogdan, who was second choice under former manager Brendan Rodgers, is expected to leave the club after falling out of favour under the former Borussia Dortmund coach.

The two clubs have reportedly agreed a fee of around £4.7 ($6.8m) to bring the player to the English top-flight. Karius is no stranger to England after having spent two years with Manchester City's youth setup between 2009 and 2011, where he featured for their U18 and U21 sides.

The 22-year-old's arrival at Liverpool will mark the third signing under Klopp's reign following the signings of Joel Matip and Marko Grujic during the January transfer window. Reds legend Dietmar Hamann believes he will be a good 'keeper after watching him play in the Bundesliga on a number of occasions.

"He's a very talented keeper. I've seen him a few times working for German Sky and I think he will be a good 'keeper," the former Reds midfielder said, as quoted on Sky Sports.