Led by South Africa's Faf du Plessis, the team will tour Pakistan for T20 matches scheduled for September 12, 13 and 15.
Darren Sammy, Paul Collingwood, George Bailey among five worldwide captains are part of the team of World XI.
South Africa's Test and T20 captain Faf Du Plessis, while talking to Dawn on Saturday, said that he's happy to play a small part in bringing cricket back to Pakistan.
Under Darren Sammy's captaincy, West Indies won two Twenty20 International World Cups.
Former Zimbabwe captain Andy Flower will coach the squad.
Andy Flower has said the World XI players know the "risks involved" in playing in Pakistan next month but are satisfied with the security operation created to protect them in Lahore.
Du Plessis, who recently led South Africa on the tour of England, said he was "honoured" to tour Pakistan.
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Clarke, who had visited Lahore in January, said: "I'm delighted that Pakistan will be hosting a high-profile series, which features several top worldwide cricketers from a number of ICC Members". The 36-year-old had left the league midway to attend fitness tests at the National Cricket Academy, Lahore on the Pakistan Cricket Board's orders, after which he will fly back to West Indies to rejoin his CPL team.
Hashim Amla, who is recovering from a shoulder injury, hoped that he will be fully fit for the historic tour."I am looking forward to the trip to Pakistan".
Furthermore, it is also good to note that there are positive assurances about a West Indies cricket team will be paying a visit to Pakistan in November 2017.
"This tour is not only important for cricket in Pakistan but also for global cricket since it opens the possibility of other teams, media and sponsors visiting Pakistan for bilateral series". "All the members of the squad have complete faith and trust in the assessment and judgement of the security experts, who have assured us that there will be no comprise on the safety and security of all those involved in the series", he said, according to a PCB statement.
Sarfraz Ahmed, the Pakistan captain, said that he and team-mates were itching to take the field in front of their home fans.
Flower told ESPNcricinfo, "Initially I had to look at who was busy during this period of the year".
"This is important both for Pakistan cricket and for Pakistan as a country as a whole", Flower said.