Given enough coins, this has actually been possible since Team Diamonds released:
52 players
+3 Rookie Premiere second team chemistry
+9 Team Builders second team chemistry
+3 Team Captains additional team chemistries
+12 Team Diamonds x3 team chemistries (one for each team as well as Eli Manning and Julius Peppers)
+3 Team Chemistry Strategy Item
It’s been reported that Epic Team Chemistry Strategy Items are available, which would make it possible to build a four-team theme team without any Rookie Premiere players. Also, it’s almost time for another Team Captains drop, so that may help reduce the number of Team Diamonds 95 OVR items needed.
Have you been able to pull this off?