1) Gerard Pique (Barcelona)
Another signing at centre-back could see former United defender Gerard Pique re-join the club from Barcelona, according to the Daily Star. The 27-year-old is looking like falling out of favour with new manager Luis Enrique this season, and his slight dip in form could mean he would benefit from a new challenge elsewhere, with Louis van Gaal interested in the experienced Spaniard to help improve his side’s fortunes at the back.