To be honest, I won't be surprised if we go for both Havertz and Sancho, and I hope that we really do so as well. Getting in the two of them and offloading players like Lingard and maybe Pereira will be boost to the team and the options that Ole can have. Havertz can easily play in the CAM, false 9 or any other of the forward positions should our first choice players be out injured/suspended/out of form. Ighalo is only here till Jan and once he is gone, we are rather bereft of good options at the central attacking positions if Martial and Bruno are out. First choice front 4 would then be Rashford, Martial, Bruno and Sancho, with more than able deputies of James, Havertz, Greenwood and Igahlo right behind them. Don't forget that it has constantly been reported that Ole is still looking for an option upfront, regardless of whether Ighalo was staying or not.
Havertz's off the ball movement, silky moves and precise finishing are really something special.