Manager Will Still has sidelined the teen as doubts persist over the winger's future.
A bid from Everton has been rejected, while Tottenham are also keen. The Blues, meanwhile, are expected to return with a new offer. Dibling, however, was recalled for Sunday's clash with Ipswich.
Tessem told BBC Radio: “It's a tricky one. It's not helping anyone.
“He could have handled the situation differently in my eyes and it would have been to the benefit of Tyler Dibling and to the benefit of the club. People will be sold if the price is right.
“I think he has to accept that he is the property of Southampton Football Club and we shouldn't sell players cheaply. He has to have that understanding that the price they are asking for is fair.
“For a young player like him, a super-talented player, it is the price that they go for. You are in the business world of things.
“But I think the situation could have been handled differently. He should have been training, he should have been with the team. Until you are someone else's property, you belong to Southampton Football Club.
“Let's put a line under it - he is back. He wants to be committed, join in and play. Okay we draw a line under the situation and he's now part of the team so we can judge him on that.
“There is no doubt that Tyler Dibling is a super-talented football player and we want to see him fit and ready. If he can show his team-mates he is ready, it will never be a problem."