Brendan Rodgers issued a telling response as he was quizzed on 'sack the board' chants after Celtic's 0-0 draw against Kairat Almaty.
Supporters inside Celtic Park vented their fury at the board over the lack of transfer activity this summer at full-time.
Loud boos could be heard with chants of 'sack the board' echoing inside the stadium both during the match and after the final whistle.
However, Rodgers suggested it's managers who pay the price rather than the board at any football club as he responded to the fan anger.
Asked if he could understand the frustration from supporters, he told TNT Sports: "Yeah, absolutely. But I also understand when it's 'sack the board,' I don't know any board who gets sacked.
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"It's normally the manager at any club, it's the manager who gets the sack, not the board.
"But listen we have to go away and analyse tonight and see where we could be better and like i said, the guys who are out there, they're giving their all and giving everything.
"But like we've said many times, in order to progress at this level and into European football, we need to have more. It's as simple as that.
"We won't have that for Tuesday, we get concentration now for Saturday, it's a big game against Livingston."
On whether his squad has enough quality to compete in the Champions League, should they advance to the league phase, Rodgers said: "I've said it clear. I can't keep going on about it every press conference I have, it's so, so clear what this team needs.
"Nights like that do (highlight it).
"It's always going to, each level you go through - this is a good team that understands the game, they're talented players and they're used to winning.
"We know what we have to improve."
