He likely gets more in the open market so it's better to deal away your pending UFAs. This team's draft record has been horrendous since the 90s, so getting prospects like Suzuki or late picks is called good asset management.
There's a truckload of dead weight contracts that are ending come July 1st. Apart from Thompson, Kovy and Scandella, I really see no point in retaining the rest. It also depends on what these guys are willing to sign for. If they have unreasonable demands, it's time to part ways come TDL.