Alex Smith appears closer to leaving the 49ers next month after reports this past week linked him to the spot where many former San Francisco quarterbacks seem to end up – Kansas City. League sources said Monday the 49ers are not locked into a deal but that team officials have told others at the scouting combine in Indianapolis they are confident a trade will be made and they plan to have 15 picks in the April draft. They have 11 selections with three more expected next month as compensation for losing free agents a year ago. The 15th pick ostensibly would come in a deal for Smith. No trades can be finalized until the league calendar begins March 12, and the 49ers will keep the trade window open until that point. Three days after that, however, the 49ers will owe Smith a $1 million roster bonus. If he remains on the roster April 1, they will owe him his full $8.5 million salary. Joe Montana and Steve Bono went to Kansas City after playing for the 49ers, and former 49ers quarterbacks Steve DeBerg and Elvis Grbac also had stints with the Chiefs.