If the Chargers use only an original-round tender, any team could offer Alexander a contract and if San Diego doesn't match, they'd receive nothing since Alexander was an undrafted player out of college.
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Of course, the higher tender a team offers the more they must pay. If the team steps up and slaps a first-round tender on Alexander or even a second-rounder, he is all but assured to stick around. It makes sense the Chargers want to keep Alexander in San Diego since he found good chemistry with quarterback Philip Rivers.
Alexander was a productive player on the Chargers last season after coming over from the St. Louis Rams, registering 37 catches for 658 yards and seven touchdowns. Alexander emerged as a deep threat to play alongside Malcom Floyd following the departure of Vincent Jackson in free agency to the Tampa Bay Buccaneers last offseason.