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West Ham United and Fulham could be going head-to-head to sign MLS left-back Kai Wagner from Philadelphia Union during the January transfer window, according to the Mail.

The rumours just never seem to stop for the Philly-based outfit.

After losing star attacker Brenden Aaronson to Salzburg and seeing Mark McKenzie flirt with a move to Celtic, arguably the most in-form full-back in the American game is now being mentioned as a target for two Premier League clubs.

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The Mail claims that £3.5 million Wagner has emerged as a cut-price target for West Ham and their London neighbours Fulham.

The Germany-born 23-year-old, who moved to the USA after a spell at Schalke, is a typically attack-minded full-back although he has also caught the eye with some solid defensive displays since MLS returned after the spring lockdown.

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Interestingly, however, neither West Ham nor Fulham are short of options at left-back.

Fulham signed USMNT international Antonee Robinson from Wigan Athletic to provide competition for play-off final hero Joe Bryan over the summer.

Meanwhile, David Moyes has Arthur Masuaku finally living up to his potential on a regular basis at West Ham, with the usually-erratic 27-year-old shining against Manchester City, Wolves and Leicester.

Furthermore, Aaron Cresswell has been perhaps the most impressive left-sided defender in the league this season, his wondrous deliveries from out wide sparking a demand in some quarters for an England call-up.

Photo by Catherine Ivill/Getty Images

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