1860 Munich duo Lars Bender and Sven Bender will not move abroad at the end of the season, according to agent Manfred Schulte.
The highly-rated 19-year-old twins have been linked with several of Europe's top clubs and Real Madrid are the latest to be credited with an interest.
However, Schulte does not feel they are ready for such high-profile transfers at this stage of their careers.
"When they were 16 they had an offer from Liverpool FC, at 17 Manchester United were keen on them," Schulte told Munich-based newspaper tz.
"But they remain realistic. It is much too early, they won't move abroad so soon."
The two central midfielders have enjoyed fine campaigns in Bundesliga 2 but there is a clause in their contracts which would allow them to move on for £1.5million in the summer of 2010.
1860 director Miroslav Stevic admits the clubs may be forced to let the Bender brothers go before next summer.
He said: "This is similar to the situation of a contract expiring, if we sell them earlier we would achieve more financial freedom."