The former Queens Park Rangers forward is disappointed with the sale.
Indeed, the 70-year-old feels the R's' sale of the young centre-back is a 'troubling' one considering the fact the west London side are already short of defenders.
QPR have made wholesale changes to their squad since relegation from the Premier League, holding onto several key players, welcoming some back from injury and loan spells but also selling and releasing a number of players.
Caulker now falls into the latter category after agreeing a season-long loan move to Southampton.
@RodneyMarsh10 so what's your opinion on loaning out caulker we need to sign defenders not get rid of them.— Dave Wookey (@davewookey) July 29, 2015
Marsh's point may be a valid one in terms of depth but, considering Caulker's form last season, QPR may be on the receiving end of a good deal if there is a permanent fee available at the end of the loan spell.
The 23-year-old could be able to shine for Southampton if Jose Fonte can inspire him much like he did with Dejan Lovren. But Caulker very much shied well away from the relegation battle at Loftus Road and the Saints have taken a risk signing him as a Toby Alderweireld replacement.