Khan took 17 wickets at an average of 14.35 to play a major role in Sussex reaching the knockout stages for the first time since 2015 - although he was unable to play in the latter rounds due to international duty. Rahman has enjoyed a successful Big Bash campaign with Brisbane Heat, picking up 12 wickets and returning best figures of three for 16.
"Middlesex Cricket is today delighted to announce the signing of Mujeeb Ur Rahman for this season's Blast campaign," thhe county said in a statement "The 17-year-old spinner becomes head coach Stuart Law's first signing of the summer and will be available for the entire Blast campaign. "He will join up with the Middlesex squad in early July to prepare for the tournament ahead."