Liverpool is understood to have triggered the release clause of Atletico Madrid striker Diego Costa with a bid in excess of £20m.

Liverpool have made a bid for Atletico Madrid forward Diego Costa but a deal to sign the Brazil international remains some way off.

It is understood an offer in excess of £21million has been made, which should be enough to trigger the release clause in the 24-year-old's contract.

Costa scored 20 goals in 44 matches for the Spanish club last season but the summer arrivals of strikers David Villa and Leo Baptistao have increased competition for places up front.

Manager Brendan Rodgers admitted on Thursday he still has money to spend and was focusing on bringing in the best they could.

"They have to be of the right quality, that's the bottom line," he told LFC TV.

"We've got money to spend on getting that quality in, but if it's not available I won't waste it for the sake of bringing a player in.

"We're really working hard to bring in the type of profile that can really help us push on."

Liverpool see Costa as an important addition to their forward line and not a replacement for Luis Suarez, for whom Arsenal have had two bids rejected already.