Vinesh Phogat has recently hinted that she might relook at her decision to retire from wrestling following the turn of events at the recent Paris Olympics.
Ugarte becomes United's fifth major signing of the transfer window after defenders Leny Yoro, Matthijs de Ligt and Noussair Mazraoui and Dutch forward Joshua Zirkzee.
The Neyveli-born defender had previously represented the Marina Machans 78 times over four seasons in his first spell and scored thrice.
Out of these 13 graduates, five players have secured contracts with the first teams of ISL clubs, while seven others have signed with the reserve teams of ISL clubs.
During the investigation, Paul Pogba said he paid 100,000 euros to the organized group including his brother.