Pakistan are weighing major changes ahead of the third and final Test against England following their 194-run defeat at Lord's, with changes to the squad and coaching set-up under consideration, sources said on Monday.

England defeated Pakistan by 194 runs on the fourth day of the second Test at Lord's on Sunday to take an unassailable 2-0 lead in the three-match series. The third and final Test will be played at Edgbaston Cricket Ground in Birmingham from September 9 to 13. Following the defeat, an emergency meeting was held at the Pakistan team's hotel, where possible changes ahead of the final Test were discussed, the sources said.

Wicketkeeper-batter Mohammad Rizwan and Test opener Imam-ul-Haq are likely to be sent back to Pakistan, while Saim Ayub and Arafat Minhas are expected to be called up for the Birmingham Test, they added. The PCB is also likely to send Imam back to Pakistan on the first available flight from London and may launch a high-level inquiry into his calf injury, the sources said.

The 30-year-old opener complained of discomfort in his calf on the opening day of the Lord's Test and subsequently did not bat in Pakistan's second innings. His absence was also felt as Pakistan were bowled out for 110 in their first innings at Lord's. The development comes amid media speculation over the nature of Imam's injury, with some former cricketers questioning its authenticity and describing it as fake.

Meanwhile, the future of red-ball coach Sarfaraz Ahmed is also facing serious uncertainty following Pakistan's defeat at Lord's. White-ball coach Mike Hesson is set to become involved in the Test team's affairs and is expected to join the squad for the third and final Test in Birmingham, according to reports.