Signing Bebe wasn't exactly Sir Alex Ferguson's proudest moment as Manchester United manager.The Portuguese youngster infamously swapped Vitória de Guimarães for Old Trafford in 2010 with the Red Devils forking out £7.4 million for his services. It seemed a very shrewd signing for the club but it didn't take long for things to unravel in Manchester.Ferguson said of the move at the time: "It is a fairytale when you read about his background. But it is one of those things that happens when you identify someone with potential."Normally you would assess someone over a longer period of time but other clubs were starting to have a look so we made a quick decision."He doesn't speak any English, so that needs to be addressed, and we need to allow him to settle in but sometimes you have to work on an impulse."

Journeyman's career since Man Utd

Impulse, indeed. Bebe would go onto spend four years with United yet only made seven appearances in the famous red jersey, scoring twice in a League Cup clash with hbhgbWolves.

Loan spells with Besiktas and Rio Ave reaped little success, only for 14 goals in 39 appearances for F.C. Paços de Ferreira to convince Benfica to inherit United's gamble.

Since that return to Portugal, Bebe's career hasn't been the easiest to trace.

The 27-year-old failed to scored at the Champions League club in just six appearances, before enduring a torrid loan period with Cordoba and a slightly less disappointing season with Rayo Vallecano.

A 2016 switch to Eibar looked to have reinvigorated the Portuguese, though, with a decent goal return amid greater game-time in Spain.

However, fast forward 18 months and Bebe's renaissance in the Basque Country has come to a jarring end with the La Liga side, placed eighth, deciding to ship him out on loan.

Drop to the Spanish second division

Most football fans missed the latest step in Bebe's career with the man himself returning to Rayo Vallecano who are in with an outside chance of promotion from Liga Adelante.

It is undoubtedly a backwards step in his nomadic career and it is the first time he has been away from a country's top division since his United switch.

Moreover, his goal return of three in 39 games last time out with Rayo won't inspire too much confidence.

Supporters will secretly be hoping that Bebe can rediscover his form with Vallecano up against weaker opposition and persuade Jose Luis Mendilibar to favour him more if he returns to Eibar.

Do you think Bebe is Sir Alex Ferguson's worst ever signing? Have your say in the comments section below.