Question: What is Since, when Transfer Fee is "£ 12m"?
SQL: SELECT "Since" FROM "2-17335496-1" WHERE "Transfer fee" = '£ 12m';

Question: What is Name, when Goals is greater than 14, and when Transfer Fee is "Youth system"?
SQL: SELECT "Name" FROM "2-17335496-1" WHERE "Goals" > 14.0 AND "Transfer fee" = 'Youth system';

Question: What is Nat., when Name is "Fàbregas ( captain )"?
SQL: SELECT "Nat." FROM "2-17335496-1" WHERE "Name" = 'Fàbregas ( captain )';