Say Hahn has a commitment from Manny for 8/250, with the understanding that if they also sign Bryce, he'll get the same deal.
Hahn: Hey Scott, how about 8/250?
Scott: Nope, not nearly enough, we need at least 10/375.
Hahn: How about 10/350?
Scott: Are you done with Manny then?
Hahn: No, we're going for both, but I can guarantee you that his contract will not exceed Bryce's
Scott: OK, 10/350 it is!
Hahn signs Harper then immediately changes Manny's terms to 10/350 and announces both signings together.
{Change the actual figures to whatever the market truly is.}