I don't think Richarlison will stay at the club because we will need a big sale and, after DCL's injury problems this season, I can't see us getting what the club think he is worth. If we could sell DCL for what the club feel is his value, I would say sell him and hope the club would then do all in their power to keep Richarlison. It doesn't just come down to which of them is the better player, Everton as a team are better with Richarlison leading the line.
When DCL plays we, understandably, try to utilize his strengths, his ability in the air and his hold up play when facing his own goals this makes us very predictable, we will either hoof it long towards Dominic, or, we try to get to the byline and put a high cross in for him to attack. When Richarlison plays up front, I feel that our play is much more fluid and varied
For me, In an ideal world we sell Dominic for big money and keep Richarlison, as a second choice we keep Dominic and sell Richarlison for big money, however, in our current position financially, it is more likely that we try to sell both and replace them with cheaper options. Which is not the end of the world, if, the replacements are good young signings who's value will increase.