He's coming barring some sort of miracle from Barcelona. It's either he's here in January, which would take Messi announcing he's leaving Barca between now and January and forcing Barca's hand as they're cash strapped or he's coming for free at the end of the season. The Garcia move I feel will tie in.
Every sign points to it. In three days the media articles have gone from we have ruled out the move cause of the expense involved, to Pep has had a 4 hour discussion with him, to we'll offer him a 10 year deal blah blah blah. To me it seems obvious Messi is coming, the same as Pep staying was obvious I thought.
Messi as a footballer adds to us. Will he track back, likely not, but we can cover that. Currently Mahrez barely does it, and dribbles into nowhere all the time or often. A 33 year old Messi is a better option then Mahrez, and probably 80% of players we could buy. Messi lightens the load on KDB creatively, plus Sterling, Jesus, Aguero as goal scorers also. That's what getting a player like Messi does.
It doesn't fix our long term issues, but it solves the current issues temporarily and opens up more options in the market for the future. Messi is a no brainer signing for me. How that can be disputed I have no idea.