The next day is always the key thing with ankle injuries. You can tape it up real tight and play through it - but if you end up with increased swelling and less mobility the next day, then you aren't all the way back yet.
We just watched Liam (after one out of body experience at Creighton on muscle memory) look like a fraction of himself for the final month of the season because of lingering ankle issues. Difference last year is that we urgently needed him back ASAP because we were sliding off the rails. Same with making Hass fight through his ailments, since we needed a point guard with Mahaney and Nowell both not being good enough. We don't urgently need anything right now. We're fine.
It would be much better for our long term goals if we got Tarris fully healthy, and going full speed in practice and games, then having him gut out 15 minutes in games at 50 percent in November/December, miss subsequent practice days getting treatment, rinse and repeat. Practice time matters too, especially with our offense and new teammates to integrate in.
If we lose a game or two more in November/December and end up a 3 instead of a 2 seed, it means we just wear blue in the Sweet 16 instead of white. And hopefully Tarris is healthy and in full beast mode then - and is seamlessly integrated into our offense and playing cohesively with his teammates. Then bring on whoever, whenever.