Gio van Bronckhorst proved his Rangers mettle with tactical masterclass and no-one can doubt him now - Jorg Albertz

The higher you go in football, the bigger the fall can be.

And at a club like Rangers there will always be people who question whether or not you can cut it.

But any doubts about Gio van Bronckhorst as manager were surely put to bed on Thursday night.

The victory over Borussia Dortmund in the Europa League was a huge moment for my old team-mate as gaffer.

Because his half-time team talk on Thursday night and the tactical masterstroke he pulled off was absolutely key in getting Rangers through.

It was outstanding from Gio.

And when I saw the change from a four to a five at the back, with John Lundstram going from midfield to the centre of defence, I thought that I had seen it somewhere before.

My mind was cast back to Monaco in September 2000.

Out of nowhere, Dick Advocaat did the same thing by moving Tugay into a sweeper role.

It surprised everyone but worked a treat. Honestly, Tugay was unbelievable that night as we beat the French side 1-0 away in the Champions League.

And who scored the winning goal? Giovanni, of course.

His tactical switch on Thursday night reminded me of that. Whatever you might think of Advocaat, when it came to stuff like that he was just outstanding as a coach. And Gio is obviously showing signs of that now too.

A top coach should always be expected to have a Plan B and Plan C to try to win any game.

Gio knew how he wanted to start the game against Dortmund.

But by half-time, he could see Borussia were getting better and better as the game was going on.

They were creating too many chances and had gone 2-1 up.

He had to do something.

Going to the back five and getting an extra body in midfield got Rangers right back in the game.

They also looked dangerous going forward with Ryan Kent