Barkley provides tempo. He weighs in with goals and assists.
You know when you watched that lot labouring against a team of Slovakian plumbers the other night for the second time in a week - that's what having Barkley in the team helps avoid.
Davies can provide a lot of dynamism, sure, and he's a good player for that. But Ross and Davies last season combined to make games very difficult for opponents to settle in and we forced them back on the strength of it.
Sigurdsson will give us a few more goals. However, that wont compensate for what will be lost.
Goals is quite clearly what we need. We don't have Lukaku to rely on this year. We need people stepping up which Ross would not do.
This is all irrelevant tho as he's wanting to leave and heeding daft career advice.