If it comes down to just two options for Chelsea Andoni Iraola and Xabi Alonso, Softfootball would recommend Iraola, the AFC Bournemouth manager.
The key reason is simple: Premier League experience. Iraola has already faced top EPL sides like Arsenal, Manchester United, Manchester City, Liverpool, Brentford, and Burnley, both home and away. He understands the demands, intensity, and physical nature of the league.

He also understands what is currently happening in the league, from tactical trends to player demands. While Alonso is a very good manager, his experience has largely come outside the Premier League, and he may need time to adapt.
Another advantage of Iraola is recruitment insight. A manager who understands the league is more likely to identify and sign players suited to its pace and physicality. That’s something Chelsea desperately needs right now.
Alonso may bring pedigree and reputation, but Iraola brings familiarity and readiness. And at this stage, Chelsea need a manager who can hit the ground running, not one who is still adjusting.