Atletico Madrid could offer former Liverpool defender Emiliano Insua to Benfica as part of their bid to sign highly rated winger Nicolas Gaitan, who is on Manchester United's radar.
The La Liga champions have already initiated talks with Benfica over a deal to sign Gaitan, who has been monitored by United and Liverpool in recent seasons.
Atleti have cash to spend after sanctioning the sales of Diego Costa and Filipe Luis and they want Gaitan at the Vicente Calderon as they prepare to defend their La Liga crown.
Last week the Spanish capital side are already willing to offer Benfica midfielder Josuha Guilavogui, who has been targeted by Everton, but sources in Spain claim they will now send Insua in the other direction too.
Left-back Insua managed only five league starts last term and he is unlikely to have greater first-team involvement anytime soon after manager Diego Simeone snapped up Guilherme Siqueira.
Benfica are keen to have the 25-year-old on board and this could help speed up the deal.
