Joe Hart believes West Ham are capable of at least a top-eight finish this season after a busy summer in the transfer market.
The England goalkeeper completed his season-long loan move to the Hammers last week and has since been joined at the club by Marko Arnautovic and Javier Hernandez.
Hart, who has also linked up with former City team-mate Pablo Zabaleta, feels his new side must repay the faith shown by co-chairmen David Gold and David Sullivan.
"Our intention is to be inside the top eight in the Premier League and even higher than that," Hart exclusively told Sky Sports reporter Paul Gilmour.
"The chairmen have backed the team with the money that they've spent and we have to aim high.
"Realistically, winning the league is going to be extremely tough, but we're going to aim for the highest we can do and compete at every level.
"We've got an interesting start to the season, away at Manchester United, and that will be a good test for us."
He added: "I can only speak for myself, I have still got a lot left in me. I love football and I just want to play. I am so grateful to be given the opportunity to try and play at West Ham.
"I am going to train hard every day and push myself. I have obviously got all those experiences, I've got the titles and medals [at City], but I want more and if we can do that here, I am going to give it all that I've got."
Hernandez will join up with Hart and the rest of the West Ham squad at their pre-season training camp in Germany on Thursday and take part in his first training session on Friday.
The Mexico international joined West Ham from Bayer Leverkusen earlier this week in a £16m deal and Hart is excited about the prospect of teaming up with the former United forward.
"He's a finisher. Sir Alex Ferguson over the years was a genius at having players like that and using them at the right time in pursuit of winning titles," Hart said.
"He probably felt he should have had more game time, but you have to balance that with some of the players that United have had over the years.
"He went to Real Madrid and then Leverkusen, still scoring goals in the Champions League and still showing what a top player he is.
"Now is his time to come back to the Premier League and show he should be a No 1 striker."