Los Meringues are 10 points behind their archrivals, and are reportedly planning a massive revamp to address their lack of success in recent years.
Other than targeting Pierre-Emerick Aubameyang from Borussia Dortmund, they are also looking to sign Alvaro Morata.
The Spanish striker joined Juventus from Real for £16-million in 2014, and would cost around £24-million to get back.
Meanwhile, Barca are determined to hold onto goalkeeper Marc-Andre ter Stegen.
The German is reportedly a target for Liverpool and Manchester City, and many feel he could leave in search of regular game-time, with Claudio Bravo currently Luis Enrique’s first-choice in La Liga.
A major stumbling block is his contract situation – it expires in 2019 and has a €80-million buyout clause.