The loss leaves Chelsea in the bottom half of the table, 13 points behind Spurs in fifth.
Pochettino’s side have regressed in recent weeks, with damaging defeats to Wolves, Liverpool and Middlesbrough.
Most worrying for Chelsea supporters is the lack of identity in the team, with Pochettino failing to get his tactical instructions across.
The Argentine signed a two-year deal when he joined the club last summer, with the option of a further year.
Though Chelsea knew it would take time for Pochettino to settle, they have been shocked at the lack of progress made this term.
But Chelsea’s board are still minded to stick with Pochettino until the end of the season.
The board appreciate the problems the club have faced this season, and are sympathetic to the injury crisis that has engulfed the first team.
But Pochettino is walking a tightrope, and Chelsea’s board will reconsider their stance if results continue to get worse.
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