They wouldn't likely attract a top 2020 PG but they could probably sign someone like Farrakhan or Tate. I was expecting they'd take Penn but he evidently hasn't grown and improved as they'd hoped. They won't get a top flight recruit but someone would probably be interested in sitting a year and then having the inside track on starting as a Soph. If the plan is for a 2020 sitout xfer in the Spring, that would bring experience in 21-22 when they'd be eligible, I think that and a top 2021 PG would be fine.
They cannot wait and take a sitout-xfer in 2021 or they couldn't play until 22-23. MERC is what graduate xfers are commonly called because they can play immediately and typically for only one year. I don't like waiting and bringing in all newbies at PG for 21-22, or the drop-off will be extreme. You never want to have zero experience coming back at PG or C IMO, particularly PG.
Guys who test the draft "waters" as Sophs almost never stay for 2 more years, barring injury. It is a bellwether that they are on their way out. IMO they need to sign a starting-caliber C in November. Considering Andre will be out of eligibility having them both leave together is very very likely. Not many kids wait until they are ready or think about coming back to win championships - we wish they would but it is not reality.
Waiting and thinking a great C will show up on the merc market, or that a great PG will in 2021's merc market is not good planning. There aren't many sure things - IMO TX TK was lucky and an exception not the rule. WE almost ended up with Daniel Giddens, who is still "all airport" and has never produced as even a decent backup. Those are the types that end up in that market. Replacing Kaleb with a Giddens-esce talent or Carton with a Dakich? No thanks. The staff needs to be more proactive than that. Walker and Sueing are fine talents. So a 2020 sitout xfer PG would probably work out. But expecting great mercs at C or PG is iffy. There may be only 1 decent one and they may have no interest in your program. It is a big risk, IMO. Better to bring in high school talent earlier.