4) Sergio Aguero (Manchester City)
Next on Barcelona’s shortlist is Manchester City striker Sergio Aguero, another classy Argentine attacker. Supposedly, Barca star Lionel Messi has expressed a desire for his club to target his international team-mate this summer, and it seems that the board are ready to take his advice. Although injuries hampered Aguero’s progress somewhat in 2013/14, the 26-year-old still managed a superb record of 28 goals in 34 games in all competitions, helping City to glory in both the Premier League and the Capital One Cup. Still, with the likes of Edin Dzeko, Alvaro Negredo and Stevan Jovetic also on the books at the Etihad Stadium, City may be tempted to cash in on the injury-prone Aguero if the right offer comes along, and it is thought that Barca could be willing to pay as much as £48m to sign him this summer.