buying gomez would be kinda stupid imo. jovetic is just way more versatile.
we still don´t know what our main formations will look like but imo we can assume, that they will be 352 and something like 4231, maybe 433 or something crazy with 3 at the back, but a similar attacking line up as in the 4231 and 433.
gomez can play as a striker in the 352, but not next to llorente. just won´t work. llorente - jovetic could work very well imo, as well as any other combination tevez/llorente/jovetic.
4231: jovetic might be able to play all 4 attacking positions, gomez just one. same goes for llorente.
some formation with offensive wingers like 433, 343...: jovetic can play all 3 positions, gomez/llorente just one.
i´m not saying that i´m a fan of putting jovetic on the "wings" but he would do quite well there imo. it would just be nice to have as many options as possible...
having both, gomez and llorente, just takes away a lot of those options and it´s pretty much impossible to start them both.