Robins loves a deep lying centre forward. I think he's just gone for a player who he thinks has got better attributes to play the 1 in his 4-2-3-1 which seems to be this seasons formation of choice. The goals will be shared around the front 4 this year. Those comparing his scoring record with McNulty are always going to be disappointed rather than watching how his attributes bring the best out of the players around him on the pitch. More than willing to give him a chance.
And this year, if it's not working, we've got the squad to completely change personnel and/or formation. Jones, Andreu, Hiwula behind Bakayoko. Shipley, Allassani, Bayliss behind JCH/Biamou.
As an aside: Jones back doing ball work with the rest of the squad it looks like from training