To give you a VC perspective... Private VC-funded company mergers are extremely difficult to execute (from a deal perspective) and carry through (from an operational perspective.)
From the other comments you have received, it is clear that we're all advising that you tread with extreme caution. Ultimately, the VC will be looking for the best interest of his current portfolio company, and hence will be negotiating on its behalf. So you need to make sure you are getting the best deal you can get.
The problem with figuring out what's the best deal is that most of the terms are tied to the current value/cap table of the VC's company and the hyped-up expectations of the VC's company's prospects/valuation.
My recommendation would be that you actively pursue other VC options, and get yourself at least one other VC offer (to invest directly in the company). This would give you a market-based valuation of your company to negotiate the merger with.
Better yet, don't raise any money and stay pure...
Good luck...
Firas Raouf
OpenView Venture Partners
bit.ly/aIWlOQ