A couple months ago a Santander top man said that their company hadn’t renewed their McLaren contract amidst the Hamilton departure because with Button alone they didn’t think they would reach the audience they want. Since the last GP Santander is back on McLaren which is a blatant clue that Alonso is signing with McLaren, or else a desperate attempt to achieve such.
It’s here@Keithcollantine I sorry I googled this from a rival.
I can’t seem to remember precisely where I heard about that, it was either from Peter Windsor or during FP from David Croft. I would go with the latter possibly by the time of the Spanish GP, I think that would explain why you haven’t heard about this.