Bangladesh came under scathing criticism after finishing bottom of their group, skittled out twice for less than 100 in their last two matches.
Asked to bat after South Africa skipper Temba Bavuma won the toss, Bangladesh kept losing wickets at regular intervals until their innings came to an end in 18.2 overs.
After being trounced by England, Mahmudullah's side had the West Indies on the ropes, opting to bowl first and reducing their opponents to 64-4 in 12.4 overs.
Bangladesh-based website 'bdcrictime' quoted an unnamed team source as saying that Shakib will head to the USA to be with his family.
While the West Indies lost to England and South Africa, Bangladesh were defeated by Eoin Morgan and Co.after going down to Sri Lanka.
Saifuddin had taken one wicket for 38 runs in his three overs when Bangladesh lost by five wickets to Sri Lanka in their tournament-opener on October 24.
Bangladesh will need a win to keep their chances of making it to the Super 12 alive, as they only have two points from two games, and are placed third with a net run-rate of +0.500.
"I think we have a good chance in the World Cup. We had a good preparation. The big reason for this is that we won our last three series," Shakib told reporters on Saturday, September 11, 2021.
The only major name missing was opener Tamim Iqbal, who ruled himself out recently having not played a T20 since March 2020.