It is good to see Parker keeping busy.
A lot of fighters going on a run of wins like he has, getting into title contention would wait. Unfortunately, he wasn't getting talked about as highly for a title fight as some other fighters were. It is a risk in fighting and losing his ranking, but keeping active and winning would help to continue to push his case for a title fight.
He has been improving under Andy Lee and keeping active. He also seems to be more disciplined with his diet and training.
Wardley will be dangerous, being undefeated, and as his last fight shows, he can be losing all rounds and still carry his power late. That could lead to him thinking the big shot will eventually come.
Wardley isn't a huge heavyweight like the 2m plus or guys carrying a lot of mass. Both guys stand in the 1.9x metre range, the same as Usyk. It is unlikely you are going to find a southpaw with good movement like Usyk. Fighting someone a similar size is probably the best you can do, looking to prepare for that title fight.