Heart says Cesc Fàbregas or Adoni Iraola. Once bitten (twice if we categorize Ten Hag as a noob from the perspective of a major club?) never shy!
Of the two, the latter is more realistic and would be more open to joining us if we approach him at the right time.
Anyway, regarding Fàbregas, Como play good, intense, somewhat vertically-oriented football and are presently 2nd in the Serie A for possession, 3rd for goal difference, 5th for goals scored, 2nd for goals conceded, 4th for progressive passes, and so forth. Not too shabby for relative upstarts.
Alonso had only coached Real Sociedad B before Bayern Leverkusen appointed him. Arteta had only assisted Pep Guardiola before Arsenal appointed him. A lot of times, experience does not matter all that much, relative to the person's ideas, coaching talent, perceptiveness, or ability to communicate clearly and withstand pressure.
Plus, Fàbregas is accustomed to Premier League football and the rigors associated with representing major teams.
https://learning.coachesvoice.com/cv/cesc-fabregas-tactics-como/
Head says someone more battle-hardened (and machiavellian?) However, that profile of coach is unlikely to be available until the summer. D'oh!