Manchester United target Toni Kroos had been told he should not leave Bayern Munich at the end of the season.
Kroos has been stringently linked with a move to Old Trafford over the past few months - with Manchester United manager David Moyes making multiple checks on the midfielder.
However former Bayern Munich manager Jupp Heynckes has told Kroos to commit his long-term future to the Bundesliga outfit.
Heynckes, speaking to Kicker, said on Kroos: "He shouldn't leave Bayern, not even for Barca or Madrid.
"He can win everything with this side over the next four years and needs to be playing as the head of the team."
Bayern Munich will be hoping to tie Kroos down to a new deal in the summer as his current contract is due to expire in 2015.
The current Champions League holders may be left with no choice but to cash in on the 24-year-old at the end of the season or face the prospect of losing the German international for free.
Manchester United are said to be willing to pay over £20million for Kroos as Moyes has highlighted his midfield as an area that needs strengthening.
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