Sakho has been the captain of a side at a young age.
Agger had his opportunities limited at Anfield last season on the occasions he returned from injury with Mamadou Sakho providing fierce competition for his place in the side.
Agger was quoted whilst on international duty for Denmark in May suggesting he didn't want to be anyone's 'third choice'.
In May, the Dane was asked whether he will be at Liverpool, and he said:“I don’t know. That’s up to the manager. I can’t go and put myself on the team sheet.
“I think it is because the manager doesn’t think that I’m good enough."
There are suggestion that the 29-year-old could leave Liverpool for £12 million, especially if Brendan Rodgers lands one of his main defensive targets in Dejan Lovren from Southampton.
So, if Agger were to leave the club, could the man who has taken his place for much of the season, be the man to take his place as the man second in command on the field?
The Frenchman said ahead of his country's World Cup quarter-final clash with Germany:
"Addressing my team-mates in the dressing room is quite a spontaneous, natural thing for me.
"I've got a strong personality which helps me to get my message across. I often try to do it with humour; it's the best way to make it stick. I've always had a big brother-style relationship with youngsters."
Having been the youngest captain of PSG at the age of 17, it seems to be something that comes natural to Sakho, and whilst the Reds might have Steven Gerrard leading from the front, it always helps to have a good number two. He might have only been a Liverpool player for one season but he would be a good candidate for the job, should Agger depart Anfield this summer.
He should certainly be a candidate if the need to appoint a new vice-captain should come about.