Ronny Deila hailed Celtic chief executive Peter Lawwell as "amazing" for his backing in the transfer window.
The Scottish Premiership champions spent a reported £2m on bringing in midfielder Stuart Armstrong and winger Gary Mackay-Steven from Dundee United on transfer deadline day, fast-forwarding the arrival of the latter who had signed a pre-contract agreement with the Parkhead side.
Midfielder Kris Commons then handed the Hoops a further boost on Thursday by signing a new two-year deal, at the behest of Deila, who was also delighted that none of his top players such as defender Virgil van Dijk had been poached.
Ahead of the Scottish Cup fifth-round tie against Dundee at Dens Park today, the Norwegian praised his boss.
"Peter Lawwell has been amazing in this transfer window," he said. "Peter and me cooperate in a good way. We have the same goals.
"We got what we wanted. We wanted the two players from Dundee United; we got them.
"Kris Commons; I took the decision that he gets this contract. There is no problem to me giving him two years.
"Now this is done, I am happy, Kris is happy and now we have to concentrate on what happens on the pitch. You always look for improvement and he has shown me in the last month that he is really up for it and understands where we are going.
"So the board and Peter have been fantastic in this transfer window. I am so happy and, when I see the new boys in training, I see quality and see boys happy to come in."