Ronald Koeman will not be involved in any more business of note on transfer deadline day after Southampton signed Charlie Austin from QPR earlier in the month.
The Dutch manager is adamant none of his first-team players will be leaving the club, a stance he has stuck to throughout the window.
Koeman said: "Maybe one of our young players like Jack Stephens or Harrison Reed, to let them play on loan, maybe that will happen today but not other big business.
"We did our job and I think if you have to do your job, or any big business, today then in my opinion you are nervous or you do not know what you have to do, because in my opinion it is a little bit late.
"I mentioned several times, we did our job with Charlie Austin and nobody will leave the club in January."
Austin, 26, joined the Saints for a transfer fee of around £4million and Koeman is content at the business that has been done by the club after admitting in December he would be looking to bring a forward in to help lighten the injury problems faced by Jay Rodriguez.
He said: "We did our business and it is no disappointment because we spoke about the January transfer window, (the need) to have a striker in. I think it was fantastic business to bring Charlie in and keep the rest of the squad and that is good.
"He did a lot of work at the time when he was injured with his hamstring and he is on a very good physical level and he shows his qualities, not by the goal which he scored against United but also in the training sessions, and I am very happy with the form he is in."