Mumbai, Sep 21 (UNI) BJP spokesperson Navnath Ban told media persons here on Monday that Uddhav Thackeray-led Rajya Sabha MP and chief Sena spokesperson needs to undergo treatment in a Singapore-based mental hospital, for which Ban volunteered to collect donations. "Sanjay Raut suffers from brain damage. He needs to undergo treatment in a mental hospital based in Singapore and I am personally willing to collect donations for his treatment. The people have recognised the intelligence of Devendra Fadnavis, and that is why they made him the Chief Minister. But Raut keeps on criticising Fadnavis," the BJP spokesperson told media persons.…