Did we learn nothing from Karel Poborski? How about El Hadji-Diouf or Jordi Cruyff?
You should never sign a player based on a good performance at a tournament.
It's the unspoken golden rule on transfers, as the track record shows that a positive tournament does not always make a player great. Even James Rodriguez's situation at Real Madrid appears to have fallen flat, but a number of clubs have brushed aside the superstition and signed their men anyway.
While Renato Sanches shines as an example of doing business before a major tournament that went on to impress, the following players clearly made an impression on their new clubs with what they did in France.
Michael McGovern - Unnattached > Norwich
The real hero of Northern Ireland's progression to the last 16 of the Euros was undoubtedly goalkeeper Michael McGovern.
Having been released by Hamilton Academical prior to the tournament, McGovern was effectively auditioning for a new job and Championships side Norwich liked what they saw.
What they saw, was the standout goalkeeper in a match that contained Manuel Neuer, and they will be hoping that he just plays like that in every game from now on as Hamilton Academical supporters will have been as surprised as anyone with his performances in France.
Michy Batshuayi - Marseille > Chelsea
Before the tournament kicked off, Chelsea were not among the names linked to the big Belgian who looked certain to be leaving Marseille.
Tottenham and West Ham were said to be front runners, with Crystal Palace having had a bid accepted too, but it was a different London club who managed to get the deal done after Batshuayi impressed from the bench for Marc Wilmots' side.
With Diego Costa rumoured to be heading for the exit door at Stamford Bridge, Batshuayi could have more of a role to play than initially thought next season, but he has a big price tag to justify.
Nani - Fenerbache > Valencia
Ah Nani, what else can be said about the brilliant yet cripplingly inconsistent part-time acrobat?
Having been surplus to requirements at Old Trafford, a trip to Turkey was next for the Nan-man as no other club were willing to offer him close to what he was on in Manchester.
However, after 3 goals, a few assists, and some solid performances in Portgual's unlikely run to glory, Nani will be playing in the #17 shirt of Valencia next season.
Samuel Umtiti - Lyon > Barcelona
After coming in to replace the suspended Adil Rami for France's clash with Iceland at Euro 2016, Umtiti managed to keep his place for the final after a strong showing.
Strong enough to warrant Barcelona to splash some cash and bring him to the Nou Camp. Umtiti, along with compatriot Lucas Digne, have been added to the squad although the expectation will not be to force their way into the starting lineup just yet.
Then again, £20m is a lot for a backup defender...
Emre Mor - FC Nordsjælland > Borussia Dortmund
While it is obvious that rising Turkish star Emre Mor will have been on the radar of all of Europe's biggest clubs going into this summer, Dortmund pulled the trigger. Technically by agreeing the deal just before the Euros he doesn't fit with the others, but it would have been his performances in the friendlies that made the Germans realise they had to act quick.
Emre Mor looked sensational from the bench in France with dribbling skills that stood out even more considering how lethargically his more experienced teammates had been playing.
While nothing so far has suggested that the kid won't be a super player, the fact that he was signed after a good tournament showing makes it slightly riskier.
Graziano Pelle - Southampton > Shandong Luneng
Two goals for Italy at Euro 2016 and Graziano Pelle is now the 6th best paid footballer in the World.
What sort of expectations Shandong Luneng have for the Southampton target-man who blew hot and cold like a dodgy tap remains unclear, but they paid an eye-watering amount for the big striker after seeing him in an impressive Italian side at Euro 2016.
It's going to be impossible for him to justify that wage...
Thomas Meunier - Club Brugge > PSG
Somehow a Belgian defender has signed for PSG, although to be fair he wasn't one of the three that Hal Robson-Kanu made look like amateurs.
Meunier was good against Ireland, and not utterly awful against Wales and so now he will play for PSG who needed to sign a backup right-back after losing Gregory Van Der Viel.
Bonus: Hal Robson-Kanu - Unnattached > Unknown
He has not yet signed for his new club, but newly promoted Hull City are said to be among a number of Premier League clubs interested in signing the Welsh striker.
Whoever does sign him will be expecting the player who morphed into Johann Cruyff vs Belgium, but in reality they will be getting a man who scored 24 goals in 198 games for Reading.
