Unai Emery’s changes against Nottingham Forest initially appeared to improve Aston Villa, but they ultimately left his side exposed at the worst possible moment.
Villa had already been forced into one change when Pau Torres suffered a hamstring injury during the first half.
Emery then made two more at the interval. Nicolas Jackson was replaced by Tammy Abraham after the referee warned the Villa bench that the striker was at risk of a second yellow card, while Alysson replaced George Hemmings.
We have already covered why Emery withdrew Jackson at half-time, with the decision based primarily on discipline rather than performance.
Alysson eventually justified his introduction by heading Villa level.
The problem came later.
Aston Villa ran out of options
Emery introduced Johan Manzambi and Ibrahim Mbaye in the 63rd minute, meaning Villa had used all five substitutions with more than 25 minutes remaining.
The Guardian reported that Villa were consequently unable to replace Ian Maatsen when the left-back suffered his ankle injury later in the game.
Villa finished with ten men and John McGinn filling in at left-back.
Forest exploited that weakened side late on, with Igor Jesus scoring the decisive goal in the 88th minute.
That does not make Emery’s changes obviously wrong.
Alysson scored, Jackson was at risk of dismissal and Villa were desperately searching for their first Premier League goal of the season.
But the sequence exposed the danger of using every substitution so early.
Emery himself accepted responsibility for Villa’s poor second-half display, while the 2-1 defeat continued their winless Premier League start.
The lesson is therefore not that Emery should avoid proactive changes.
It is that Villa’s growing injury problems make preserving at least one late substitution increasingly important.
