Arsenal are closing in on triggering a £24.7 million deal for Jackson Martinez of Porto.
Arsene Wenger has singled out Martinez to reinforce Arsenal's attacking force.
Arsenal have already been in talks with Porto over Martinez, but Liverpool are also interested in a player who scored 21 goals this season.
Porto president Nuno Pinto da Costa said: “He’s a player we want to keep, but we cannot stop someone paying the clause."