Ings completed a complicated switch to St Mary's after the club's agreed the structure of payments ahead of the close of business.
A brush with relegation last season was a warning for Southampton - but how much have they done to fix the problems that saw the club under such pressure last time around?
Ings spent almost four years at Burnley before a 2015 switch to Liverpool, where he struggled to make an impact playing 14 games in three years due to injury problems.
"He's obviously a local boy, who gives us another excellent option up front", Saints manager Mark Hughes said.
That ability will be tested on this first weekend of Premier League action. We've tried to address that and clearly Danny coming in as well will complement the strikers we already have.
"I think fans respond to that as well". After a few top-half finishes, however, last season's 17th place suddenly made a reboot very necessary.
"We've had a blip". In terms of how the season panned out, we don't want to go down that road.
One-cap England global Ings was a popular figure at the Merseyside club but given the quality of Liverpool's other attacking options - particularly their starting front three of Mohamed Salah, Roberto Firmino and Sadio Mane - opportunities would have been limited.
Ings started his youth playing career at Southampton but was released.
But perhaps most important, Southampton has not proved the revolving door of recent years.
As for sales, Southampton moved on three failed signings in Jordy Clasie, Sofiane Boufhal, and Carrillo - albeit only on loan - while Dusan Tadic left for Ajax.
"We're the ideal club for him at this point in his career", Hughes said.
The forward will now be hoping to establish himself as a regular fixture in the first team at Southampton as the new season kicks off this weekend. Saints qualified for the group stage two years ago and, asked if they can repeat that feat this time around, Hughes's response was bullish.