The Liverpool manager is short on fit centre-halves and he signed one-time England international Steven Caulker last week in an attempt to bolster his defensive numbers.
Agger swapped Liverpool for Brondby in 2014 after falling out-of-favour under Klopp’s predecessor Brendan Rodgers at the Merseyside club despite being vice-captain.
While the Denmark international would certainly be a good option for Klopp to have in his squad, Agger was one of Liverpool’s more injury-prone players.
But the 31-year-old defender was in attendance at Anfield on Sunday as Manchester United were 1-0 winners in the north-west derby thanks to Wayne Rooney’s winner.
Agger posted the above photo and wrote: “Home Sweet Home😜”
The Dane scored 14 times in 233 appearances in all competitions for Liverpool during an eight-season career at Anfield.
Agger was part of the Liverpool side that won the League Cup and reached the Champions League final in 2007.
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