Tottenham manager Mauricio Pochettino remonstrates with referee Mike Dean. Photo: Reuters
The threat of a touchline ban hangs over manager Mauricio Pochettino, who confronted referee Mike Dean after Tottenham's 2-1 defeat by Burnley at Turf Moor on Saturday.
Pochettino has accepted that, in his own words, he "crossed the line" during an argument with Dean on the pitch, following a defeat that severely damaged Tottenham's chances of winning the Premier League.
Spurs assistant manager Jesus Perez and goalkeeping coach Toni Jimenez were also involved in the incident, which Dean is understood to have included in his match report.
The English FA will study that before deciding whether to issue a misconduct charge.
A ban would be more likely if it were to emerge that Pochettino had used abusive or insulting language. Neither party involved has revealed publicly what was said.
Tottenham's manager was upset about some of Dean's decisions - notably the incorrect awarding of a corner that led to Burnley's opening goal, scored by Chris Wood, and the showing of only a yellow card to home defender Phil Bardsley for a fierce challenge on Danny Rose.
However, Burnley had equal reason to be critical of the officials for allowing Rose to take a quick throw-in five yards further forward from where the ball went out, making it easier to clear their centre-back Ben Mee, in setting up Harry Kane's equaliser.
Pochettino acknowledged that his frustration was caused more by his side's failure to build on that equaliser.
Instead of pushing on to win, Tottenham lost, as Ashley Barnes touched in Johann Berg Gudmundsson's cross with seven minutes left for the decisive goal.
Pochettino indicated afterwards that he would not contest an FA charge, although he may decide to consider his options if a touchline ban looks likely.
He said: "I will accept everything that can happen from the FA, but I hope they won't go any further."
A win would have lifted Spurs, at least temporarily, to two points off the top of the Premier League.
Matches against Chelsea and Arsenal in the next six days at least offer an opportunity to make amends quickly for a below-par display.
Their one bright moment was the goalscoring return of Kane, fit again after missing seven matches with ankle ligament damage.
England's captain, watched by national team manager Gareth Southgate, produced a ruthless finish after racing clear for his 21st club goal of the season.