The arrival of Alexis Sanchez at Arsenal can propel the Gunners towards the Premier League title, Mikel Arteta and Santi Cazorla have said.
The Merseysiders had hoped the Chile international forward could be included in a deal to take banned Luis Suarez to the Camp Nou.
But Arteta says the fact that Sanchez has been added to Arsene Wenger's squad will give them an extra element that was missing last season.
"I'm delighted -- he's the sort of player we are looking for," Arteta told ESPN. "I think he'll bring so many good things to the club and the squad.
"He's got experience, and I think he's a very gifted player. He's very strong in a one-on-one situation and that's what we need up front -- someone to make the difference. He's that kind of player.
"I want him to be ready because lots of other teams are fighting and bringing in good players, but if we can maintain our structure, we'll have a good chance [of winning the Premier League]."
He said Sanchez would fit perfectly with Arsenal's ability on the break, adding: "I think with him we will be much more difficult to handle.
"We have been missing that pace in behind. Sometimes we played with Cazorla, [Olivier] Giroud, [Jack] Wilshere up front -- and we had no pace."
Fellow midfielder Cazorla, whose superb free-kick in the FA Cup final win over Hull helped Arsenal end their nine-year wait for a trophy, was equally impressed with the new arrival.
"He's a fantastic player," Cazorla said. "He will bring even more quality to the side, which is why we're all very happy about it.
"We can focus on the new season and try to win the Premier League. The FA Cup win took a lot of pressure off us. It was great to end nine years without a trophy, it was very big. We will now go into the new season and try to achieve the same again."
Gunners legend Thierry Henry tweeted his approval of the Sanchez signing, congratulating his former club and adding: "Looking forward to seeing him play soon."
Sanchez could soon be joined at the Emirates by Mathieu Debuchy and Loic Remy, with the club thought to be closing in on deals for both players.