Manager Roberto Mancini had bemoaned the lack of signings by the club, but the Italian had more reasons to be cheerful last night.
Defenders Maicon and Matija Nastasic winger Scott Sinclair, 23, and goalkeeper Richard Wright, 34, all moved to the Etihad Stadium.
Maicon has joined from Inter Milan while Sinclair has made his long-awaited switch from Swansea.
Serbia defender Nastasic joins from Fiorentina for an undisclosed fee. The 19-year-old’s deal sees Montenegro international Stefan Savic moving in the opposite direction.
Wright, meanwhile, joins after leaving Preston earlier in the summer, and is likely to be the club’s third goalkeeper.
City are also last night busily chasing Benfica midfielder Javi Garcia.
There were also departures from the ranks as midfielder Nigel de Jong made the switch to AC Milan and striker Roque Santa Cruz joined Malaga on a season-long loan.
Everton, meanwhile, signed Bryan Oviedo from FC Copenhagen on a four-year contract for an undisclosed fee.
The Costa Rican has been a regular starter for FCK after joining from Deportivo Saprissa in his homeland. The 22-year-old can operate at left-back and on the left side of midfield.
With Sinclair gone to City, Swansea completed the signing of Valencia winger Pablo Hernandez for a club record fee of £5.55million.
Hernandez, 27, had voiced his desire to be reunited with Michael Laudrup, having worked with the Swans boss while at Getafe.
And he was delighted to put pen to paper after passing his medical, telling the club website: “I’m very happy to become a Swansea City player. “It was my target as soon as I knew there was interest. This was the only club I wanted to join.”
Hernandez becomes Swansea’s eighth summer signing and the fee paid for the wide man just eclipses that paid by the South Wales club to bring midfielder Ki Sung-yueng from Celtic last week.
Hernandez, who scored five times in 40 appearances for Valencia last term, will not be available for today’s Barclays Premier League meeting with Sunderland.
“I want to thank the club and Michael Laudrup for making me feel like a very important player. Now I want to repay that faith on the football field,” he said.