A new rider will need to be found for Melbourne Cup hopeful Constantinople after his jockey Glen Boss was suspended at Randwick.

A shattered Glen Boss will miss the ride on Melbourne Cup favourite Constantinople after he was suspended for careless riding at Randwick.

Boss was outed for six meetings for shifting in aboard the Kris Lees-trained Attention Run near the 350 metre mark in the City Tattersalls Club Cup won by Master Of Wine .

He will ride Epsom Handicap winner Kolding in the $7.5 million Golden Eagle at Randwick next Saturday before beginning his penalty.

Boss, who pleaded guilty, indicated he would appeal the severity of the ban in a bid to keep his ride on Constantinople.

Boss, who won the richest race on turf, the $14 million Everest this spring, pleaded with stewards for leniency given the time of year and rides at stake.

"Obviously I am riding a horse than can win the $7.5 million race, Kolding, and I'm riding the favourite in the Melbourne Cup and he can win," Boss said.

""I'm not going to beg and plead but I've worked really hard to get myself into this position."

Along with the Melbourne Cup, Boss will miss the Oaks and Mackinnon Stakes meetings at Flemington before he is permitted to return on November 16.

Tim Clark was also outed for careless riding aboard Faretti in the Brian Crowley Stakes at Randwick on Saturday but will miss only Thursday's card at Hawkesbury due to his good record.

The one-meeting penalty was Clark's first in two years.

Clark is booked for several rides at Flemington on Derby day including Cosmic Force in the Group One Coolmore Stud Stakes (1200m).