What's interesting, is that I've always thought Richi was better as a left forward than a number nine. He was excellent in the EL final for the first hour or so. It's certainly the way that Watford and Everton utilised him.
With Muani joining, there is certainly scope for Richi to start left forward alongside Muani and the 2 of them stay on the high press. Then we would have Kudus and Simons playing the central and right roles but slightly deeper. Simons seems to play 10 from with a left bias so he would tuck in on Richi's sides. All our central midfielders are right footed players so naturally they push Kudus forward. As long as our 6 midfield and forwards all work their arses off, this will suit Frank's system. Palhinha will keep our defence protected and there will still be scope for the full-backs to attack wide.
First though, we have to get more than our right side as the main attacking outlet. Frank has to balance it.