Query: What was the amount of the Emirates airline company deal?
Context: The project was initially delayed by red tape and rising costs, and construction was completed in July 2006, in time for the start of the 2006–07 season. The stadium was named after its sponsors, the airline company Emirates, with whom the club signed the largest sponsorship deal in English football history, worth around £100 million; some fans referred to the ground as Ashburton Grove, or the Grove, as they did not agree with corporate sponsorship of stadium names. The stadium will be officially known as Emirates Stadium until at least 2028, and the airline will be the club's shirt sponsor until the end of the 2018–19 season.