Experimentation will go out of the window as India will get down to finalising their best eleven for the World Cup during the three-match T20 series against an ultra-aggressive England, beginning here on Thursday. Skipper Rohit Sharma, who missed the fifth Test in Birmingham after contracting COVID-19, will be travelling to the port city on Wednesday and is expected to feature in the series-opener. Test players including Virat Kohli, Jasprit Bumrah, Ravindra Jadeja, Shreyas Iyer and Rishabh Pant will join the T20 squad from the second game onwards.