The midfielder was loaned out to Boro in the summer on a season-long loan and has scored three times in his last five appearances for the club.
He was on the scoresheet against Plymouth Argyle over the weekend and has been showing signs of being a solid player in the Championship this season.
Leeds did not believe he would get enough opportunities in their squad and were happy to loan him out.
Parkin believes that it shows confidence in Farke and his squad and they were confident that Middlesbrough would not be close to them this season.
He feels it is also nice that Leeds allowed Greenwood to join a club such as Boro where he is enjoying his football.
The former attacker said on the What The EFL Podcast: “Maybe there is confidence in the owners and the manager in Leeds that they are not going to be a threat.
“They would be ahead of them by enough points not to be concerned about them.
“I think it’s quite nice that let him go and play somewhere else where he is going to enjoy himself and in front of big crowds similar to what he will get at Elland Road.
“Back your manager and the lads he has in the first team.”
Greenwood still has a contract until 2026 with Leeds and is scheduled to return to Elland Road at the end of the season unless Middlesbrough trigger a purchase option.
