Vcb14

This is my team right now, ideas how to set tactics? Thanks in advance

Hello, We are new to the game. We had a couple of easy questions: 1. How much of rating difference can i have to make a player sign to my team. For example: Team rating 78 - Which is the highest overall i can get? 2. If clubs outside the league accept 2 offers, one 10 mln and the other 11mln the player goes to the highest offer or it picks randomly? Thanks in advance