Atletico Madrid have agreed to sign Colombia striker Radamel Falcao from Porto for a fee of 40 million euros ($57.26 million).
A controversial Radamel Falcao effort gave Porto a 2-1 win over Arsenal in their Champions League last-16 first leg but the English side will take heart from Sol Campbell's away goal on his return to the tournament after four years.
Holders Porto thrashed Sporting 5-2 to reach the semi-finals of the Portuguese Cup on Tuesday.