Mikel Arteta admits he has "big concerns" about whether he'll be given transfer funds to improve his squad in order to compete with the top teams next season.
Virgil van Dijk and Alisson Becker errors gifted Arsenal a 2-1 victory as Liverpool's hopes of breaking the Premier League points record were dashed at the Emirates Stadium.
The result, sealed by Alexandre Lacazette and Reiss Nelson goals, took Arteta's side to within three points of Wolves in sixth but the Arsenal boss wasn't getting carried away in the aftermath.
Arteta: Big concerns over transfer funds
When asked about whether he's worried about Arsenal's lack of transfer funds, the Spaniard revealed he was unsure if he'll be given the required financial backing in the summer to get Arsenal closer to the top teams in the Premier League.
Arteta told Sky Sports: "It's a big concern. You can see how [Liverpool] build their squad and there is no magic, you need to improve the squad with quality, quality players. And we need a bigger squad to compete in this competition. That is the challenge.
"It's a massive job. You only have to look at the difference between the two teams - it's enormous. The gap in many areas we can't improve it in two months but the gap between the accountability, the energy, the commitment and the fight between the two teams is now equal.
"Before it wasn't like this. I'm very proud of that. The rest will take some time but at least we've got that now and my message to the players is with that we can create something."
Can Arsenal secure top-four finish next year?
Asked if Arsenal could secure a top-four finish without spending in the summer transfer window, Sky Sports pundit Graeme Souness replied: "I don't think Arsenal will be getting into the top four next season.
"Manchester United are on the right road, Liverpool and Manchester City are going nowhere, Chelsea have and are going to spend big this summer.
"Arteta doesn't know how much money is going to be available this summer, but the noises coming out of the club are not encouraging if he wants £100 or £200m to spend."
Analysis: Arteta puts pressure on Arsenal owners
Sky Sports' Nick Wright:
Arteta could hardly have been clearer. He was delighted with the spirit and belief shown by his players in this battling victory, but he knows those qualities will only get them so far. If the club want to reclaim their Champions League place in the future, serious investment is required.
He made the point in his pre-match press conference but it was in his post-match interview with Sky Sports that he really hammered it home. "There is no magic," he said. He has transformed the squad's attitude, but he cannot work miracles with players who are not up to it. "Enormous," was how he described the gulf between his side and Liverpool's.
Arsenal's financial outlook is not rosy - and that's before we even consider the implications of the coronavirus crisis. They are already facing a fourth consecutive season outside of the Champions League. A failure to secure a Europa League place would cost them further revenue.
Arteta knows that, but he also knows that Arsenal's hopes of closing the gap on the teams above them will rest on strengthening the squad this summer and beyond. His comments after Wednesday's game were another clear message to KSE, Arsenal's American owners: If you want to take the club back at the top, you need to pay for it.
Klopp rues costly errors
Defeat at the Emirates was the first time Jurgen Klopp had lost to Arsenal in his five-year tenure at Liverpool.
It ended the champions' hopes of breaking Manchester City's 100-point Premier League record points haul, leaving Klopp to rue two costly and uncharacteristic defensive mistakes.
"Twice, there was a massive lack of concertation," he told Sky Sports. "Especially in the first half before the goal, we were just brilliant, it was really good. We had 24 to three shots, that's incredible, but these two moments killed the game for us.
"We then had to chase the game in the second half, did that and Arsenal had no real chances - they had another shot in the last second, maybe. We did a lot of things well, but you cannot win football games when you concede goals like this."
Klopp: We will learn from mistakes
Asked whether Liverpool's recent crowning as Premier League champions contributed to the lapses in concentration, Klopp added: "I'm not entirely sure now, I will have to watch it again, but we took a break, that was clear.
"We lost concentration in this moment and it's the Premier League, you cannot do that. We usually don't do that, but we did it today. Virgil lost the ball, but I didn't see a lot of offers around, no one wanted the ball really and as a pack, we took a break and that makes no sense.
"And Arsenal were there twice in the game and it was not enough today for us. We have to take that, we have to learn from that 100 per cent and we will.
"I'm not sure we never did it [lost concentration], we've had sloppy moments once, twice, maybe three times but usually we don't get punished for it. But tonight we got punished for it and that's good on one side because we have to learn from it."
Van Dijk holds his hands up
Liverpool defender Van Dijk refused to accept Liverpool's title triumph as an excuse for their defeat at Arsenal, adding: "We gave them goals as a present.
"We dominated and put pressure on them but gave them two goals and obviously then it's difficult to come back. If you give goals away like we did today, including myself, you get what you deserve.
"The goals shouldn't happen, but until then nothing was wrong. We pressed them and scored a fantastic goal. A moment of concentration [cost us] and that was unfortunately something we had to deal with twice. It's so easy to blame us having won the title.
"I had a feeling we could win here comfortably, but if you give them goals you see what happens. I made a mistake, I take the blame for it, I take it as a man, and we move on."