Agger leaves Liverpool for Brondby
Daniel Agger of Liverpool (R) and Simon Makienok of Brondby pictured during a friendly match at Brondby Stadium in Brondby, Denmark on July 16, 2014 - by Liselotte Sabroe
The 29-year-old centre-back joined Liverpool from Brondby in 2006 and made 232 appearances for the club, scoring 14 goals and winning the League Cup in 2012, but his spell at Anfield was frequently disrupted by injuries.
"Liverpool have been such a big part of my life and my family's lives for so long, that leaving is extremely difficult," Agger told the Liverpool website.
"The opportunity arose for me to return home to Brondby and at this stage of my career, it felt like the right decision for me.
"I wouldn't leave here to go anywhere else and that has been proven by my actions in recent seasons -- I have turned down many offers to move to other Premier League and European clubs.
"I would like to thank the Liverpool supporters for the incredible backing they have given me in my time here and the warmth and generosity of spirit displayed to my family."
Agger slipped down the pecking order at Liverpool following the arrivals of Dejan Lovren, Mamadou Sakho and Kolo Toure over the past year, but manager Brendan Rodgers paid tribute to his achievements.
"We've been discussing Daniel's future with him during the close season and I know this is a decision he has reached after much soul-searching and deliberation," the Northern Irishman said.
"Daniel loves Liverpool and the club's supporters, and has a unique connection with them. When we had the privilege to play Brondby in pre-season, we saw the esteem he is held in and I can understand why he would want to return there."
Agger began his career with Brondby and spent two seasons with the club, winning a Danish league and cup double in 2005, before joining Liverpool in 2006 for a fee of around £6 million ($10 million, 7.6 million euros).
An elegant, left-footed central defender with a powerful shot, he has won 64 caps for Denmark and scored 11 goals.