Mauricio Pochettino has demanded his Tottenham players be switched on.
Tottenham slipped to a surprise defeat at home to Newcastle on Sunday, and never recovered from Sammy Ameobi's equaliser.
Spurs had gone in at half-time 1-0 up, only to concede after just seven seconds of the restart to the Newcastle substitute, and went onto lose 2-1.
The goal completely changed the dynamic of the game and Tottenham head coach Mauricio Pochettino was reportedly furious at the side switching off.
He told The Mirror: "I have never seen an opponent score so quick against my team. It was the first time it’s ever happened with me on the bench – and, I hope, the last time because it was a very bad feeling."
The Argentine was unimpressed with his players, and has demanded one thing happens for him to forgive his players.
"What must the players achieve for me to forgive their mistakes against Newcastle? First of all, it must be a turning point. You have to be alive for the whole 90 to 95 minutes.
"We had a lack of concentration after half-time and lost a goal after five seconds. That cannot happen again.”
If Spurs commit a similar error against Brighton there could be hell to pay as far as Pochettino is concerned, but it is not just Wednesday night's League Cup tie he is concerned about. The former Southampton boss is adamant however, that he does not want to see a repeat of the side conceding so quickly ever again.
In the same interview, Pochettino went onto claim Spurs were struggling because they cannot play the football he wants to on the 'small' White Hart Lane pitch, but with the club not moving stadium for another three or four years at the earliest, if the Argentine does not change his own approach, he may not be around to see if the new ground suits the club better.
His comments come across openly, as a frustrated individual who feels he is being let down by his players committing needless errors, and then allowing their confidence to dip.
As previous Spurs bosses have found out before him, getting out of the negative cycle is not easy, and a League Cup victory will only mend the pain, if it is followed up with a weekend win over Aston Villa.