Jeff Wilson has posted two tweets confirming that the Rangers are not ready to officially announce a Luke Jackson signing just yet.
Source says Rangers have not agreed with Luke Jackson, though he was brought to town Wednesday for a physical.
GM Jon Daniels confirms previous tweet on Jackson.
This likely has as much to do with Bug Selig and draft pick slotting as continued negotiations, since the deadline for draft pick signings is still five days away, and the MLB office strongly suggests that large over slot deals are not announced until just before the deadline.