I haven't read the article, but doesn't sound like he's mentioned.
Church, I believe, was injured in part of fall practice, but not sure how he is doing now. I imagine that Estep will get every opportunity to stick at 3rd. Estep hit pretty well in OOC play (.333), but was absolutely abysmal in conference (.211). He gave us very little in league play. Scored just 6 times over 28 games, with half of those coming against LSU. So, the question moving forward will be how much he's improved at the plate. He didn't really strike out a ton, he was 8th in strikeouts in league play, so he was putting it in play, but just not finding openings.
Then you have to compare that to Church. Estep was better defensively than Church, as Church had some difficulties adjusting to the speed of the game, but that should improve for Church. Church also had a similar experience to the one Estep had at the plate. Church hit .340 in OOC play and had 6 doubles, 2 triples and 1 home run in 50 at bats. However, in conference play he hit an amazingly low .174. So, can Church adjust? Which one of those two will be better at adjusting? Both were actually hitting against league pitching for the first time, and there can be a big learning curve there. So we will see who was able to handle that better.
I think third is Estep's to lose. I think his defense gives him the leg up over anyone else. However, I think Church will get a shot there. If Estep struggles at the plate again, Church will get a look. Whoever hits better will stick. If neither hit, you might see UK shake it up and move Pitre/Harris there. McCarthy might also be an option.