Phillip Lahm recentlt rated the striker as priceless for the Bavarian outfit.
United are keen on getting Muller and have tabled an audacious €85-million bid as they look to secure a marquee signing before the close of the transfer season.
Lahm believes his childhood teammate, Muller will not leave him at Bayern.
“Thomas is one of those role models who you can’t attach a price-tag to. He lives for Bayern, he is a very, very important player for us,” Lahm told Munchner Mekur.
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