The deal also involves the construction of a maintenance depot at Old Oak Common in north-west London which will create 244 jobs and 16 apprenticeships.
When fully operational it will support 80 jobs to maintain the new fleet of trains..
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Arsenal managed to beat Everton at the weekend but it wasn't enough to finish in the top for the first time in Wenger's time at the club.
The entertainer was held for the murder of Stuart Lubbock, who was found dead in his swimming pool in 2001, but never charged.
Although the diamond was believed to be cut in the 19th Century, its history and how it arrived at the car boot sale is unknown.