Arsenal boss Arsene Wenger has been monitoring the progress of versatile Sporting Lisbon defender Marcos Rojo, who has also been watched by Manchester United, Manchester City and Liverpool this season.
The 24-year-old has shone in a centre-back role with Sporting this season, while he has earned 20 caps for Argentina in the left-back position, and is expected to be a starter for the Albiceleste at this summer's World Cup finals in Brazil.
Rojo has made 21 appearances for Sporting this season, scoring three goals in the process. However, it's his defensive versatility which makes him such an attractive proposition from the prospective of the interested English clubs, according to the Daily Mail.
Arsenal could lose out-of-favour club captain Thomas Vermaelen in the summer, and with Wenger reluctant to sign a top out-and-out centre-back in the Belgian's place - because of the solid defensive partnership comprised of Per Mertesacker and Laurent Koscielny - Rojo, who also doubles up as an effective full-back, could be the perfect signing.
However, the Gunners face stiff competition from Manchester United, who could lose as many as three defenders at the end of the season. Nemanja Vidic is joining Inter Milan, while Rio Ferdinand and Patrice Evra's contracts also expire this summer.
Liverpool, meanwhile, may opt to pursue Rojo if they decide that Chelsea's Ashley Cole is not the right option for them. And Manchester City already have plenty of defensive options, but could still attempt to add the South American to their squad ahead of the 2014/15 campaign.