Liverpool manager Brendan Rodgers will target "multi-dimensional" signings in the summer as he looks to bolster his squad for the Champions League.
The Reds are back in Europe's elite club competition for the first time since 2009 after finishing second in the Premier League.
However, playing resources are in serious need of strengthening if they are to compete on two fronts.
Rodgers has already targeted Southampton and England midfielder Adam Lallana as a priority and he is interested in Sevilla left-back Alberto Moreno.
"Our criteria that we look for is players with strong technique and football intelligence," said the Reds boss.
"They need to mentally have the attitude and the capacity to learn and they have to be so hungry to fight for every ball on every day in training and in the game.
"You'll get some players who are specialists and who need to play in particular positions, but if we can get players in who are multi-functional, and can play in different roles and are multi-dimensional, it sets us up and gives me more options.
"We've developed tactically over the last couple of years. Our style has been the same, but the structure of the team has changed a number of times in order to fit the needs of the games and to give problems to the opponent.
"In order to do that, you need players with the capacity to be tactically intelligent."
Liverpool banked over £97million from the Premier League prize fund and television money this season and Rodgers could have between £40million to £60million at his disposal.
The futures of Daniel Agger and Lucas Leiva remain unclear while Aly Cissokho and Victor Moses will return to their parent clubs, Valencia and Chelsea.