Seager currently on trial at Bristol Rovers. Could indicate a Will Wood type situation where we've told him we aren't going to resign him so we let him go out to different clubs during the season to help them find a club.
https://www.bristolpost.co.uk/sport/football/football-news/southampton-starlet-currently-trial-bristol-2431369
Echo article saying that Tyreke Johnson & Marcus Barnes "both expected to return to the Saints squad for tonight’s clash against Derby County" despite playing for the U23's on Sunday."
Source: https://www.dailyecho.co.uk/sport/17359358.southampton-duo-marcus-barnes-and-tyreke-johnson-impress-for-u23s/?ref=rss
According to a report in The Sun, apparently we want to extend his contract. (No surprise there!)
https://www.hitc.com/en-gb/2019/01/14/do-report-hasenhuttl-makes-decision-about-future-of-southamptons/
I think it might happen in the summer as he's one of our highest-worth assets & going into this summer we won't have any big cash from previous sales in our transfer kitty (which we usually do).