Xavi has made reinforcing his attacking options a priority heading into the January transfer window, but Barcelona’s dire financial situation means the club will be limited to loan signings for the time being.
The La Liga giants are keen to bring Sterling to the Camp Nou but City are understood to value their forward at £45million.
Barcelona are also in a position where they are must avoid loan deals that include an obligation to buy next summer.
The club therefore been considering moves for players who are not playing regularly for their current clubs and prepared to make offers that include only the option to make the deal permanent.
ESPN report Werner and Ziyech are two players Barcelona have made approaches for ahead of the winter window.
Werner has scored just twice this season after a difficult debut campaign last term.
The Germany international has started just six games in all competitions, missing the last five through injury.
Ziyech has started just two of Chelsea’s 11 Premier League games this season and would appear to be furthest down the pecking order at Stamford Bridge.
Barcelona are also familiar with the Morocco international having scouted him extensively prior to his move to Stamford Bridge in 2019.
MORE : Barcelona target Manchester United star Edinson Cavani to replace sidelined Sergio Aguero
MORE : Manchester United target Barcelona midfielder Frenkie de Jong as Paul Pogba’s replacement
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