FORMER Celtic hero Pierre van Hooijdonk has revealed he was sent razor blades in the post in Scotland and claimed someone spat in his face when he opened a door to them.

And the Dutch ace insisted he’s never felt so unsafe as when he was in Glasgow.

The retired Holland internationalist was a huge success for the Hoops in a controversial two-year spell under the late Tommy Burns from 1995 where he netted 52 goals for Celtic in 84 appearances, before leaving under a cloud to Nottingham Forest in a deal worth £4.5million.

Read more: Celtic striker Odsonne Edouard wants to keep his place for Rangers

Now a football agent and a TV analyst in his Dutch homeland, the 48-year-old has cranked up the heat ahead on this week’s Old Firm showdown by revealing some of the treatment he received during his time at Celtic.

Van Hooijdonk was previewing the weekend game between two of his former clubs, NAC Breda and Feyenoord, in Dutch publication BN DeStem, when he stated: “In Rotterdam there is no such rivalry with NAC at all. I myself never felt that rivalry. 

“Not at NAC and not at Feyenoord.

Read more: All eyes on Rangers as Celtic see Morton off comfortably

“But at Celtic v Rangers though, when I went for lunch somewhere or stopped at a traffic light with a Rangers pub on the corner, I was insulted and the middle finger went up. 

“I opened my door once and was spat on by someone who then ran away like a greyhound.

“I even had razor blades sent to me in an envelope. That was intense.

“There was hatred there and you could see it.

“Nowhere have I felt so unsafe as in Glasgow.”