TPG and Temasek backed Manipal Hospitals is all set to sign a time-bound exclusivity agreement to acquire a controlling stake in Naresh Trehan’s Medanta Hospitals in the next eight to ten days. Sources indicate that post due diligence (which is expected to complete in 90-days), Manipal and its investors would take a final call on the deal. Market sources peg the deal size (for over 80 per cent stake in Global Health, which owns, manages and operates Medanta) to be around Rs 60 billion. The due diligence is about to begin. Talks are in a preliminary stage. A time-bound exclusivity agreement is expected to be signed between the parties soon. If the due diligence is satisfactory, then the deal will go through within 90-days or so, said a source.