Gossip column: Muller, Costa, Herrera, Falcao, Rabiot

Chelsea are interested in Manchester United target Thomas Muller and see the Bayern Munich and Germany forward, 26, as a possible replacement for Spain striker Diego Costa, 27.
Costa is expected to return to the Chelsea starting XI for the Premier League game against Bournemouth on Saturday despite making his frustrations clear at being dropped to the bench for the draw at Tottenham.
Chelsea are worried they will not be able to return on-loan striker Radamel Falcao, 29, to Monaco in January as the French side are reluctant to recall the Colombia international.


Manchester United midfielder Ander Herrera, 26, wants talks with manager Louis van Gaal after becoming disillusioned at Old Trafford.
United's hopes of luring Real Madrid forward Cristiano Ronaldo back to Old Trafford have been boosted by his mother Dolores, who would prefer the 30-year-old to return to the club he left in 2009.
Manager Arsene Wenger has revealed that in 2014 Arsenal just missed out on a deal to sign 19-year-old French winger Kingsley Coman, who is currently impressing on loan at Bayern Munich from Juventus.
Arsenal are lining up a £22m January bid for Porto's 18-year-old defensive midfielder Ruben Neves, as cover for the injured Francis Coquelin.
Stoke's England goalkeeper Jack Butland is not for sale at any price, says Potters boss Mark Hughes.

Manchester United, Juventus and Barcelona will compete to sign Basel's 18-year-old Switzerland forward Breel Embolo in January.
Brazilian striker Neymar's Ballon d'Or nomination has earned former club Santos £1.4m as part of the deal that took the 23-year-old to Barcelona in 2013.
Southampton want to sign England Under-21 winger Solly March for about £7.5m from Championship side Brighton


Tottenham and Arsenal both want to sign Paris St-Germain's France Under-21 midfielder Adrien Rabiot, 20, in the January transfer window.
Newcastle boss Steve McClaren will have to sell before he can buy any new players in January, despite the club's position in the relegation zone.
Manchester City's Argentine defender Martin Demichelis, 34, whose contract expires in the summer, is planning to discuss his future towards the end of the season, but is likely to return to his homeland to finish his career.
Chelsea defender Branislav Ivanovic has backed team-mate Diego Costa to come back stronger after the Spain striker was dropped for the first time this season for the Blues' goalless draw at Tottenham on Saturday.
Santi Cazorla and Alexis Sanchez have yet to be ruled out of Arsenal's must-win Champions League tie against Olympiakos next week because the club have not received medical assessments on the pair.
Porto's Spanish goalkeeper Iker Casillas, 34, has not ruled out finishing his career in Major League Soccer in the United States