Celtic fans, we asked for your views after the signing of Mika Baur and your thoughts on the transfer window as a whole.
Here's what some of you said:
David: Well, by all accounts that is four class players Celtic have brought in. A big improvement on the last few transfer windows on quality signings. So just a cover for left-back now, Kieran Tierney needs a back-up. If one Greg Taylor wants to come back I would be well happy with that.
George: Four massive signings for us, Can't rest on our laurels though, let's kick on Champions League wise and get back to a semblance of the club that we are.
Jim: Another good midfielder in the door, hopefully he won't be the last. The Celtic strategy is always to drag transfers out and it's tiresome for the support. I know that transfer fees and salaries are ridiculous, but if we want to progress, we have to get real.
Andy: Baur could be a good replacement for Arne Engels. We need to find one for Callum McGregor as he's coming to the end of his career. Great to see new signings but I'm concerned there's been no strengthening of the defence. If Alistair Johnston goes and KT gets injured we're short of cover.
Patrick: This is a clever piece of business with Arne Engels possibly moving on in the near future, it shows the club are going in the right direction.
Liam: We have finally started signing players with the profile required to drive the club forward. Not every transfer works out but we are giving ourselves a chance with these four signings.