The January transfer window is now open, with Manchester United continuing to be linked with a host of big names.

The Red Devils have already agreed a deal to sign Amad Traore, and could look to bolster their ranks further to build on an encouraging first half of the season.

Here, Sports Mole rounds up the latest news on possible comings and goings from Old Trafford.

Tuesday morning's Manchester United transfer talk news roundup:

Barcelona 'pull out of talks with Bayern Munich's David Alaba'

Real Madrid have emerged as the favourites to sign David Alaba after Barcelona reportedly pulled out of talks for the Bayern Munich ace.

The Austria international looks set to leave the Allianz Arena when his contract expires at the end of the campaign.

Alaba has been unable to agree fresh terms with Bayern, and Barca were rumoured to be locked in discussions with the 28-year-old.

However, a report carried by the Daily Mail suggests that the Catalan giants have put all transfer activity on hold due to concerns over finances.

That has opened the way for La Liga rivals Madrid to pounce, with the reigning Spanish champions said to be more willing to match Alaba's high wage demands.

Alaba has also previously been linked with a move to Manchester United.

Lucas Vazquez rejects new Real Madrid contract?

Real Madrid's Lucas Vazquez has reportedly rejected the La Liga champions' first offer of a new contract.

The Spain international has now entered the final six months of his deal with Los Blancos, although manager Zinedine Zidane recently announced his desire to keep him on the books at the Bernabeu.

The versatile 29-year-old has often been deployed at right-back this season and remains a key player for Real Madrid, chalking up two goals and three assists in 19 appearances across all competitions so far.

However, Marca reports that Real Madrid have tabled their first renewal offer for Vazquez, but he has quickly rejected that proposal.

Even though Vazquez's future remains shrouded in uncertainty, the report adds that Luka Modric will soon pen fresh terms at Real Madrid, while there is also optimism over a new contract for captain Sergio Ramos.

Vazquez, who has been linked with a move to Manchester United, has won three Champions League crowns and two La Liga titles during his five years at Real Madrid.

More transfer news from Manchester United:

Borussia Dortmund chief admits Man Utd talk affected Jadon Sancho form
Borussia Dortmund CEO Hans-Joachim Watzke thinks that Jadon Sancho "lost his fluency" after a summer of speculation surrounding a potential move to Manchester United. Read more.

Marcos Rojo 'in talks over Manchester United exit'
Manchester United defender Marcos Rojo reportedly holds talks with Boca Juniors over a potential move, but a deal is a long way from being finalised. Read more.