Marsh had been scheduled to play for Lord's-based Middlesex last season but that decision was cancelled following the impact of the coronavirus pandemic.
Super Smash: Sophie Devine completes 36-ball 100 to slam fastest century in women's T20 history for Wellington Blaze
Devine tore apart the Otago Sparks bowling attack, hitting nine sixes and seven fours to set up a 10-wicket win for her Wellington Blaze side.
Tom Curran was the top wicket-taker last season for Sydney Sixers, who are the defending Big Bash League champions.
The news comes a week out from Brisbane Heat’s season opener against the Melbourne Stars in Canberra and means Mujeeb will almost certainly miss Brisbane’s two matches in Australia's capital.
Cricket Australia bans mini bar in hotel rooms for Big Bash League to minimise interaction among cricketers
Besides the no mini bar facility, BBL participants will only be allowed enter areas of the "Hub" earmarked for their team.
Watson, who retired from all forms of cricket during the 13th IPL earlier this month, said the changes will make the game more complex.
Trent Woodhill, the BBL's player acquisition and cricket consultant, said the best T20 leagues in the world are the ones that innovate, push the boundaries and challenge the status quo.
The 10th edition of Australia's Twenty20 tournament begins on 10 December, although the 31-year-old will not be available until after Christmas.
Morkel, 36, who played 86 Tests and 117 ODIs for the Proteas, moved to Australia in 2018, where he lives with his sports broadcaster wife and children.
The women's version is currently being played entirely in Sydney and there were concerns that also might be the case for the men.
Shane Watson retired from international cricket in 2016 and bid adieu to the Australian Big Bash League last year.
Star Australian cricketers including Smith have been in a bio-bubble since August when they toured England before moving to the protected environment of the IPL in September.
The two factors prompted the former South African skipper to pull out of the T20 league. The 36-year-old is currently playing in the Indian Premier League for Royal Challengers Bangalore in the UAE.
The next edition of the BBL is set to take place from December 2020 to February 2021.
No Indian player has ever featured in the BBL as the country's cricket board (BCCI) doesn't allow active players to take part in overseas leagues.
A statement from the south coast club said Gillespie would be returning to Australia to take up a role with the South Australian Cricket Association. A statement from the south coast club said Gillespie would be returning to Australia to take up a role with the South Australian Cricket Association.
The 10th season of Australia's Big Bash League is set to end on 6 February, depending on the continuing pandemic. The first BBL night match will start at the Adelaide Oval just as play ends in the first Test between India and Australia in Brisbane.
Former Australian spinner Brad Hogg recently suggested ways Cricket Australia could improve its Big Bash League (BBL) so as to increase people’s interest in the T20 league.
Warner reflected on how in 2013-14, playing Twenty20 tournament without much gap between the Test cricket adversely impacted his performance.
Former Black Caps captain Brendon McCullum calls for introduction of a New Zealand team in Big Bash League
All cricket is on hold right now due to the COVID-19 pandemic sweeping through the globe with several tours and tournaments being either cancelled or postponed. Even the future of the T20 World Cup, scheduled for an 18 October start, is shrouded in uncertainty.