I have been saying this all along, but it will require a fundamental change in Spalletti's philosophy. Or perhaps a change in coach.
Football has changed a lot in the last 10 years. Spalletti's 4-2-3-1 attacking system was current 10 years ago, now its dated. Nowadays top teams playing attacking football like to play with 3 forwards, the idea is to go on a rampage in attack, kinda like shock & awe. Look at teams like Liverpool (Mane-Firming-Salah), City (Sane - Aguero - Sterling), Barca (Dembele - Suarez - Messi), PSG (Neymar - Cavani - Mbappe), or even closer to home Juve (Ronaldo - Mandzukic - Dybala). Tactically they vary, but one common theme is that they don't play "wingers" but rather "wing forwards". These wing forwards are not there to provide the crosses, but rather to attack the goal and play off the striker. The fullbacks provide the real width & crosses, that is the modern way.
So in most attacks these teams have 3 forwards attacking the goal, so even if the fullback crosses there is a much better chance of scoring. It also means the midfielders have more options for a through ball, as well as on a counter it makes it very difficult for the opposing team to defend as there are 3 runs to mark.
If Spalletti is serious about his possession based attacking play of building from defence, he will need to update his attacking tactics. The "old fashioned" 4-2-3-1 does not work anymore as an attacking philosophy. He needs to use the likes of Keita and Karamoh as wing forwards (or ideally get better ones). Its time to move away from the likes of Politano & Candreva even tactically.