The 23-year-old has returned to Marseille on loan. Not exactly great business from Newcastle...
After the deal was confirmed, some defended him and some suggested he didn't get a fair chance from Steve McClaren.
Most, however, focused on the terrible business it represents for Newcastle. Indeed, both Thauvin and Remy Cabella were signed from France... yet are now back playing in Ligue 1.
They've taken the Magpies' money for Thauvin, then, and essentially kept their player.
Those who feel the 23-year-old will come back stronger must consider a key point: how can Thauvin prepare for a league he clearly isn't strong enough for... by returning to a physically weaker league (and one still inferior in terms of quality)?
Newcastle fans certainly haven't been impressed by the way their club conduct themselves in the transfer market - and there is an argument for Thauvin being one of the Magpies' worst ever signings.
Here's how supporters at St James' Park reacted on Twitter to the Frenchman's loan move back to Marseille...
Cabella, Thauvin and now Riviere all out on loan after failure to impress at #NUFC. Alan Carr's dad has some explaining to do/needs sacking— Marc Johnson (@Mojo293) January 31, 2016
6 months ago Marseille had Thauvin, today they have Thauvin plus £13m of Newcastle's money and £12m of Remy Cabella thrown in for fun #nufc— Ash Dowie (@AshDowie) January 31, 2016
Marseille must be laughing at #NUFC, they have two of our players in Cabella & Thauvin back on loan & pocketed over £25m!!! BONKERS!!!— Lee Lawler HD (@LeeLawlerHD) January 31, 2016
Thauvin barely got a chance at #nufc & when he did he was poor.— tom (@toonlowdown) January 31, 2016
A long term target of Carr that McClaren clearly wasn't interested in.
Add Thauvin to a list that includes Cabella, Riviere, Marveaux, Amalfitano, Gouffran and Yanga-Mbiwa. Players just not ready for PL #nufc— Scott Goodacre (@scottgoodacre) January 31, 2016
* article edited