Sandesh Jhingan, Tomba Singh and Manandeep Singh are the other three players.
Rangdajied United are currently place at the bottom of 13-team standings, having failed to win a single match from eight outings. They have drawn three, while losing five in the season so far.
It was learnt from reliable sources that some more prominent I-League clubs are also in touch with IMG-R for similar loaning of players.
"It is a very good move as all these players are very good and they are the ones who can help the club save from relegation. These players can change the club's position," a source told PTI.
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"They will be registering the players either today or tomorrow and three of them would start practising with the team soon. Gouramangi and Paul will come back after their trials in Denmark on Thursday or Friday."
The organisers of the Indian Super League, who had last month, decided to defer the proposed tournament to September-November next year instead of early 2014, had already roped in international stars like Louis Saha, Dwight Yorke, Fredrik Ljungberg, Hernan Crespo and Robert Pires as marquee players.
Fortuna Dusseldorf have offered a week-long trial to Chettri.