The 19-year-old had been linked with a number of Championship clubs, but has now signed a deal with Boro.
The youngster has joined Boro on a season-long loan.
McEachran made just five appearances while on loan at Swansea last season.
What is your opinion? Feel free to discuss the article under. You have to comment by using your Facebook profile. Be fair and have respect for other people and opinions!
Chelsea have struggled to build momentum in the opening stages of the campaign and are currently looking over their shoulders at the relegation zone.
Who of Europe’s top strikers will move to England this summer?