The 19-year old winger is in the Three Lions squad for Wednesday night's friendly with Denmark at Wembley and his Danish Anfield mate is of the belief that his performances this season have been at a level worthy of him sneaking into Roy Hodgson's final roster for Brazil.
"He can handle the pressure, or else he would not play for us, for Liverpool. It's a great opportunity for him," said Agger of the Jamaican-born youngster.
"If he continues what he is doing right now I cannot see why not (for the World Cup squad).
"He is a great, great talent and has some qualities England can use."
Sterling is an England U21s regular after representing the country at U16, U17 and U19 levels. He made his senior debut in a friendly against Sweden in November 12.
For breaking stories and all the great banter like us on Facebook: facebook.com/tribalfootball