Mac Allister struck deep in added time at the City Ground on Sunday to secure a 1-0 win for the Premier League champions.
The Argentina international sealed victory by pouncing on a loose ball from close range just minutes after he had a goal ruled out by VAR.
“I think what he needed is what he showed in the last six, seven or eight games – a run of games where he’s getting back to his usual level that he showed so many times last season,” said Slot.
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“And he had that level also in the first half of the season but it went a bit with ups and downs, as the team went in terms of performances with ups and downs.
“But I see much more consistency recently – not only in Macca’s performance but in the team performance and many individual performances.
“But I think it’s always nice for a player to score, especially if it’s in extra time of extra time.”
The Dutch boss, whose side are now just outside the Champions League places on goal difference alone following a run of poor results, added: “We needed this goal, we needed that win to be on the right side of things once in a while because we’ve been so, so unlucky this season.
“And for the first time, at least it felt to me for the first time, we’ve been a bit lucky this season.”
– AFP
Photo: Carl Recine/Getty Images