Athletics general manager David Forst says the team wanted to make a statement going into its new home. That was one the factors that led to its deal with Luis Severino. The 30-year-old Severino was formally introduced by his new club after finalizing a $67 million, three-year contract. The veteran right-hander was a free agent for the second straight offseason after going 11-7 with a 3.91 ERA in 182 innings during his only season with the New York Mets. It’s the largest deal ever for the low-budget A’s, topping a $66 million contract for third baseman Eric Chavez covering 2005-10.