Could Ruben Amorim's pursuit of Premier League defender solve Manchester United's left-back crisis? Fans will be eager to see if the club makes its move before the transfer window slams shut.

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Ruben Amorim has warned Manchester United fans that the rest of the season is going to be a "rollercoaster." United followed up positive performances against Liverpool and Arsenal with a lacklustre display against the Premier League's bottom side Southampton on Thursday.