Agger will serve as Gerrard’s deputy in the 2013/14 campaign.
Whilst of course this is a great honour for Agger, it also sends out a message from the Reds to Barca that the Dane is not for sale.
The Catalans began to keep tabs on the 28-year-old when it became apparent first choice Thiago Silva would not be leaving Paris Saint-Germain this summer.
Along with Agger, the La Liga champions have also been sniffing around fellow Premier League defender David Luiz and have already had a bid for the Brazilian turned down.
The Merseyside club feared that with Luiz off limits, Barca would come calling for their defensive ace and manager Brendan Rodgers does not want to let the Denmark international leave.
Therefore the boss and the team have shown their commitment to Agger by passing on the vice-captaincy from Carragher – with the Scandinavian already the third highest paid player at Anfield behind skipper Steven Gerrard and want-away striker Luis Suarez.
The centre-back has spent seven years with Liverpool following a £7.7m transfer from boyhood side Brondby and since then Agger has gone onto make 209 appearances for the Reds in all competitions.
Along with Martin Skrtel and new signing Kolo Toure, the Dane makes up a trio of experienced defenders in the heart of the defence and Rodgers is keen to take that strength at the back into the new season.