Transfer Rater: Anthony Martial to Inter Milan, Joachim Andersen to Manchester United

Things change in the blink of an eye in football. The Football Whispers Index takes the latest transfer rumours and gives them a score out of five; the higher the score, the more realistic and reliable the Whisper.

Here are today's top five emerging whispers. And keep an eye on Transfer Talk for all the latest gossip.

Joachim Andersen to Manchester United

Jose Mourinho's list of potential centre-back targets continues to grow with the 22-year-old Sampdoria defender the latest name linked with a January switch to Old Trafford. According to La Repubblica, United had four scouts in attendance to watch him in action against Torino at the weekend. The Denmark international is valued at around £25 million.

Anthony Martial to Inter Milan

The Serie A side are ready to move for Martial if he doesn't sign a new contract at Manchester United, according to the Daily Mirror. Martial's current deal expires at the end of this season, although the Red Devils will almost certainly take up their option to extend it for a further year. However, Inter hope the possibility of losing the 22-year-old for nothing in the summer of 2020 would convince United to sell.

Keylor Navas to Juventus

Having lost his place to Thibaut Courtois in the Real Madrid starting XI, and feeling like he doesn't have the support of interim boss Santiago Solari, Navas is considering leaving the Bernabeu in January. And, according to Calciomercato, his first choice could be to follow Cristiano Ronaldo's path and leave Madrid for Turin.

Mousa Dembele to Juventus

With Sami Khedira and Emre Can struggling with injuries this term, Juventus may sign another midfielder in January and are considering a move for the Spurs star. According to Corriere Torino, Juve believe a modest fee would be enough to land the Belgian, who is out of contract next summer.

Shinji Kagawa to West Ham United

The former Manchester United midfielder has only made four appearances for Borussia Dortmund this season and could be allowed to leave in January. According to Calciomercato, West Ham have registered their interest in the Japan international who would command a fee of around £12m.