The shocking defeat in Greece has left Moyes and United with everything to do in the second leg, after goals from Alejandro Dominguez and Joel Campbell sent the Red Devils back to England on the wrong end of a catastrophic loss.
The pressure is now piling up on Moyes, with United fans clearly unhappy with the direction of the team after the departure of Sir Alex Ferguson in the summer, but with a mass squad overhaul planned, five names are reportedly on Moyes' shortlist, write The Star as he looks to provide a much-needed injection of quality.
Defence is an area where United will need reinforcements, with experienced trio Rio Ferdinand, Nemanja Vidic and Patrice Evra all set for the Old Trafford exit door, and the Daily Star suggests that Moyes has made Porto's dominant French centre half Eliaquim Mangala a primary target this summer. The former Standard Liege man has established himself as one of the top young central defenders in world football, and has attracted interest from Chelsea and Manchester City too, with a £35m price tag reportedly above the 23-year-old's head.
A strong and imposing defender, Mangala has the aerial ability and athleticism to be the perfect replacement for Vidic, and at just 23, the Frenchman has incredible potential to be a hero at Old Trafford just as Vidic was during his time at Old Trafford.
Moyes has seemingly been looking to replace Evra for some time now, with previous bids submitted for Leighton Baines of Everton and Fabio Coentrao of Real Madrid, but the report states that Southampton's Luke Shaw is now the #1 target to take Evra's left back slot having impressed for Mauricio Pochettino's side this season. The youngster, who earned his first full England call-up today, will reportedly command a fee between £20m and £30m.
Much like Mangala, Shaw has huge potential and is poised to become a regular in the England setup. With Chelsea also interested in the 18-year-old, it would be a huge coup to bring Shaw to Old Trafford, and his outstanding crossing ability would be a welcome boost after United's failed crossing bombardment against Fulham earlier this month.
But unsurprisingly, the main position of focus is in midfield. United are in dire need of central midfielders, even after the £27.5m capture of Marouane Fellaini, and even more so after Michael Carrick and Tom Cleverley received criticism for their recent performances. Bayern Munich's Toni Kroos, Borussia Dortmund's Ilkay Gundogan and Sporting Lisbon's William Carvalho are the names linked with a move to Old Trafford, as Moyes looks to totally revamp the heart of the United midfield.
Kroos showed his immense quality against Arsenal with a stunning long range strike, but also demonstrated his passing range and defensive capabilities too, and would almost certainly offer more all over the pitch than Carrick does. Gundogan has earned a reputation for being an all-action midfielder for Dortmund, and his outstanding energy would be a welcome addition to the United midfield, which has been lethargic at times this season.
These two players would certainly offer more instantly than Carvalho, who at just 21 is still learning his trade in Portugal. If United manage to land Kroos and Gundogan, there is no need for Carvalho, despite his potential. Of the three potential midfield signings, Carvalho would appear to be the odd man out.
Most of these players are outstanding talents who should go some way to repairing some of United's problems, but Moyes will need a lot of time to rebuild a United side that appears to be so devoid of quality. They may well be a good start, but there could be even more targets for Moyes, with full backs, wingers and even strikers also likely to be eyed up in a bid to solve United's problems.
image: © Jon Candy