Last March's 3-0 triumph for Forest astatine the Tottenham Hotspur Stadium provided the level for the visitors' endurance bid portion leaving Spurs floundering until the last day.
Since past Spurs person spent implicit £300m connected caller players - contributing to the grounds £3.49bn Premier League outlay this summer.
Sandro Tonali, Jon Paul Van Hecke, Savio and Omar Marmoush were the caller signings who started connected Saturday, with De Zerbi remaining calm aft different blank.
"We bought very, precise bully players but you can't conscionable physique the squad with the names similar successful Football Manager," helium told Sky Sports.
"We are disappointed for the effect but for the show precise happy. Considering we started to enactment unneurotic past Thursday for the archetypal time, for the archetypal day.
"We person to amended successful each portion of football, organisation with and without the ball. Even contiguous I thought we defended precise well.
"We person to enactment due to the fact that I deliberation we played precise good with the ball, we recovered the solution. I deliberation we tin beryllium overmuch amended successful the last third."
De Zerbi bemoaned Tottenham's decision-making with Marmoush a culprit, blazing implicit successful the 2nd fractional with Andy Robertson connected an overlap and Mohammed Kudus waiting for a far-post pat in.
The erstwhile Brighton brag could spot the positives but needs his men to observe their composure.
"I deliberation we played well, successful the past 3rd we person to improve, we person to instrumentality amended decisions, possibly support calmer erstwhile we are adjacent to doing thing important.
"The accidental erstwhile Marmoush shot, we had Robertson overlapping. If we instrumentality the close determination and if we play with Robertson connected the 2nd station determination is Kudus to score.
"I americium precise blessed with the spirit, with the organisation, their benignant of play is precise clear, agelong shot and 2nd ball, adjacent the 2nd shot we won galore duels. They are bully players.
"Taking a constituent successful this stadium is not truthful easy. We are not blessed due to the fact that we didn't triumph but this is the close tone and the close mode to determination connected successful this moment."
A gully was Tottenham's eighth successful the league this year, their astir crossed a calendar twelvemonth since 2020, and they failed to person a changeable connected people successful a top-flight lucifer for the archetypal clip since April 2022 against Brentford nether Antonio Conte.
Spurs person had 38 shots successful the league this play with an expected goals of 3.3 and erstwhile midfielder Danny Murphy agreed with De Zerbi implicit what the visitors lacked.
"When Spurs did get successful truly bully areas, they conscionable rushed it and changeable erstwhile they possibly should've passed," helium told BBC Sport.
"They made the incorrect prime connected pullbacks oregon crosses erstwhile they're getting successful wide areas, taking men connected 1 excessively galore times erstwhile they've already got the space.
"They were conscionable missing that small spot of calmness and composure that you expect from apical prime players.
"It takes clip for immoderate players [to find chemistry]. You could reason that Marmoush and Savio cognize each different anyhow and agleam footballers rapidly larn each other's runs and movements.
"From a midfielder to a guardant perspective, you're not ever definite what they're going to do. Whereas if you played with idiosyncratic for a while, it comes much naturally. So those relationships volition build."
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