Manchester United manager David Moyes has handed the club's owners a five-man shortlist, according to the Express.
The Scot is desperate to strengthen his squad following a troublesome start to his tenure at Old Trafford - and will reportedly receive a £100m war chest from the Glazer family in order to salvage the Red Devils' season.
Borussia Dortmund duo Marco Reus and Ilkay Gundogan are both on the list, as are Atletico Madrid midfielder Koke, Porto's highly-rated defender Eliaquim Mangala and Southampton left-back Luke Shaw.
Moyes is determined to bolster his squad before the January transfer window closes, but there's a real possibility that none of the aforementioned players will be available this month.
With the Glazers reluctant to spend on short-term fixes, Moyes may subsequently need to wait until the summer before making any high-profile signings.
Manchester United, who currently sit seventh in the Premier League table, take on Sunderland in the Capital One Cup semi-final first leg this evening - two days after being dumped out of the FA Cup by Swansea City.