The 29-year-old was the surprise omission from interim coach Rob Howley's 36-man squad for the four Tests in November after not being handed one of the three wildcard picks available under the Welsh Rugby Union's new selection policy.
The new rule means only three players who ply their trade at clubs outside of Wales can be selected, with Jamie Roberts, George North and Taulupe Faletau getting the nods on this occasion.
In the absence of Priestland, Howley has been forced to look elsewhere for a third fly-half, opting to hand Ospreys' Sam Davies a first call-up instead.
Priestland says he understands the decision to be left out of the latest Wales squad and admits his chances have not been helped by a lack of action for Bath this season.
"If all the best players left without any consequence, Welsh rugby would be in a pretty tough position," he said.
"It hasn't helped that I haven't played, so If I was picking the squad I wouldn't have picked me - I would have picked the other three as well.
"It's no real surprise and it will be nice for me to get some game time at Bath and hopefully hit a bit of form."