The former Hammer hails the "terrific" West Ham midfielder.
The 28-year-old looked at his tenacious best on Sunday when the Hammers left Manchester United with a 1-1 draw in the quarter-finals of the FA Cup.
As usual this season, it was Dimitri Payet who stole the headlines after his 30-yard free kick beat David de Gea to open the scoring, but Sinclair was also impressed with Noble, whom he claims is simply a "terrific midfielder".
"Everyone knows that Mark is a terrific midfielder but there was one moment in the United game where he received the ball and took it between two Man United players before spinning off," he told the club's official website.
"It just showed what a quality all-round player he’s become."
This season, West Ham have heroes in almost every position in what has been a truly wonderful first campaign in charge for Slaven Bilic, whose side sit fifth in the Premier League table.
Not only that, the Irons are one point behind fourth-placed Manchester City in the race for Champions League qualification.
Before they can dream about improving their magical season by reaching the FA Cup semi-finals, though, they must beat the Red Devils when they visit Upton Park for the replay.
Everton, Crystal Palace and Watford are the other sides still left in the competition.