Johnson was the toast of the Keepmoat Stadium as Boro turned in a stunning display against Doncaster.
Gordon Strachan: "I admire him as a bloke and a man yes, as well as a footballer.
"His contract has still got six months to go. It's still the same situation, I'm here to talk about the game.
"It was a terrific goal, it was a fantastic strike, that is what he can do.
"He made the second goal and scored both his goals. We had some good performances out there.
"It's just scoring goals and if we get that organised we'll be fine.
"I think it has been well documented that I'm a big fan of his (Stephen McManus) and he's not getting a game at Celtic.
"I've asked him if he wants to come here and he's desperate to and it's now a case of trying to do a deal with Celtic.
"I think Doncaster are unfortunate that we have been unlucky in a few games recently and lady luck has been on our side tonight.
"We had controlled the game at Sheffield Untied and should never have got beat there and we should have beat Swansea on Saturday.
"Doncaster are unlucky they've got a some of their good players out injured but I know exactly how Sean (O'Driscoll) feels."