I have "trade approval" turned on to avoid nonsense trades.
But in this case I was controlling LAL trading Swaggy for the picks!!
I selected the "trade finder" option and the offer from the Suns came out (despite I slighlty increased the "trade difficulty" slider in MyLeague settings).
I confess that I couldn't resist to the tempation of getting rid of Swaggy while receiving two picks back.