Alejandro Balde's potential Barcelona exit has attracted interest from Manchester United, Liverpool are considering Murillo and Nico Schlotterbeck as long-term replacements for Virgil van Dijk, and Real Madrid are monitoring Brighton goalkeeper Bart Verbruggen.
Barcelona left-back Alejandro Balde could depart the club in January, with Manchester United reportedly interested in signing the 23-year-old Spain international.
Balde's potential departure could create an opportunity for Barcelona to pursue Manchester United's 28-year-old Argentina defender Lisandro Martinez.
Liverpool have identified Nottingham Forest's 24-year-old Brazilian defender Murillo and Borussia Dortmund's 26-year-old Germany international Nico Schlotterbeck as potential long-term successors to 35-year-old Netherlands centre-back Virgil van Dijk.
Manchester United could consider selling 32-year-old Portugal midfielder Bruno Fernandes rather than risk losing their captain on a free transfer when his contract expires next summer.
Real Madrid are monitoring Brighton's 24-year-old Netherlands goalkeeper Bart Verbruggen as a potential long-term replacement for 34-year-old Belgium international Thibaut Courtois.
Manchester United forward Marcus Rashford, 29, could seek a move away from Old Trafford if the England international struggles to secure regular starts following his return from injury.
Tottenham Hotspur remain interested in Nottingham Forest's 26-year-old England midfielder Morgan Gibbs-White and could renew their pursuit during the January transfer window.
Barcelona and Real Madrid continue to monitor Tottenham's 27-year-old Spain right-back Pedro Porro, with neither Spanish club reportedly deterred by Spurs' valuation of approximately £62m.
Monaco striker Folarin Balogun could leave the Ligue 1 club in January, with Manchester United emerging as a possible destination for the 25-year-old United States international.
Arsenal face competition from AC Milan, Aston Villa and Roma in the race to sign Real Madrid's 20-year-old Brazilian forward Endrick.
Tottenham Hotspur, Manchester City and Manchester United are among several clubs monitoring Villarreal's 22-year-old United States defender Alex Freeman.