If Pep refrains from playing Fernandinho at centre back it would be a big help. I think we can rest Dias as long as his replacement is a recognised centre back. Ake Laporte and Stones are all good defenders. The one advantage with Dias is he appears to be a leader and reins in Cancelo and Walker when they tend to go a bit "headless" at timesIf Dias plays the rest of the season we will not concede goals like the ones Leeds scored.