Sekera is a bonified top 3 on most if not all teams when healthy. Was arguably our best defender in 2016-2017 with his primary partner being Russell who was playing his offside. That year he was great and a huge part of why we made the playoffs and had good success there too.
All of that is correct. Unfortunately, it's more likely that Sekera never plays in the league again than he returns to 2016-17 form.