Manchester United have drawn up a four-man shortlist of summer transfer targets as vice-chairman Ed Woodward accepts major investment is needed to close the gap on Europe's elite.
United's focus is on defence, with a potential overhaul to their back line with Kalidou Koulibaly, Lucas Hernandez and Nikola Milenkovic all linked, while Douglas Costa could be brought in to bolster their attacking ranks, according to The Mirror.
United were defeated 2-0 at Old Trafford by Paris Saint-Germain on Tuesday night in the Champions League, their first loss since Ole Gunnar Solskjaer took over as interim manager in December.