If Collins cares about winning and cares about state income tax, then unless SEA was blowing up his phone, DAL is probably the best option on the table.
Just a note about taxes, professional athletes pay state income taxes on their game checks for games played in other states. So, only half the pay of Dolphins players are exempt from state income taxes (more if they also play in other states without an income tax). However, these rookies have probably never paid taxes in their life and don't have a clue or care. Once they blow all their initial contract money, THEN they start thinking about taxes for their next contract.