Unless the 6ers get an influx of cash from somewhere I cant see them getting 2 imports as 1 would have to be on marquee money.
Only if they are near the cap. You can get a good import on the cheap more easily than you can with a local. e.g., could replace Teys with an import if he went. Maybe you get a dud, maybe you get a 20 PPG scorer.
The Johnson loyalty thing would be interesting but isn't particularly cut and dried. Many players suit elsewhere in the off-season (Redhage has played in PR, I think?) but Johnson had specifically elected to play elsewhere in place of the original contract. Martin had tried to do the same.
And if you put the onus on the club to try and retain players, at what price? Maybe Martin creates some precedence, short of him actually succeeding in playing elsewhere.