Spanish lender BBVA has a pretty big goal if it succeeds in buying smaller peer Banco de Sabadell: become the largest bank in the euro area by market value. BBVA, or Banco Bilbao Vizcaya Argentaria, said Tuesday that it sent an offer to Sabadell. In a letter to Sabadell’s board, BBVA’s Carlos Torres Vila said a combined bank would be among the largest and strongest financial institutions in Europe, “with the ambition of becoming the largest bank by market capitalization of the eurozone.”