Borussia Dortmund defender Mats Hummels is frustrated with the club's current poor form and could secure a move to Manchester United when the transfer window re-opens next month.
The Daily Star cite reports in Germany as claiming that Hummels, Dortmund's influential captain and a World Cup winner since the summer, is disillusioned with life at Signal Iduna Park because of the club's dreadful start to the season.
Sunday's 2-0 defeat to Eintracht Frankfurt leaves Dortmund rock bottom of the Bundesliga table - having lost eight of their opening 13 matches - and Hummels is subsequently considering his options.
United keen on Hummels
It was recently reported that United boss Louis van Gaal has no plans to strengthen his squad unless the right target becomes available, while the Red Devils' executive vice-chairman Ed Woodward told the club's shareholders that there were no plans to acquire new players in the New Year as short-term fixes.
However, Hummels would certainly be an attractive proposition for Manchester United, whose current batch of central defenders have been largely unconvincing this season.
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United's unconvincing defenders
Injuries certainly haven't helped matters; Phil Jones, Jonny Evans, Chris Smalling and summer signing Marcos Rojo have all been sidelined with various problems since August, leaving the likes of inexperienced duo Paddy McNair and Tyler Blackett to enter the fold.
Despite spending £150 million in the summer transfer window, it's still widely accepted that Van Gaal has not addressed United's defensive frailties due to his failure to successfully replace Rio Ferdinand and Nemanja Vidic, who both left Old Trafford at the end of last season.
Hummels frustrated at Dortmund?
Hummels is regarded as one of Europe's best centre-backs, and the commanding 25-year-old's reputation was further enhanced over the summer thanks to his impressive showing at the World Cup finals with Germany.
But despite being named Borussia Dortmund captain by manager Jurgen Klopp in August, Hummels has been powerless to prevent the Bundesliga club from enduring one of the worst starts to a season in the club's 104-year history.
While there are currently no major concerns that Dortmund will be relegated from Germany's top flight - and Klopp's job remains relatively secure for the time being - Hummels is understood to be feeling unsettled.
And the £30 million-rated man also wanted by Arsenal could secure a shock move to Old Trafford in January if Dortmund's fortunes fail to improve between now and the New Year.
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