Gyokeres now officially an Arsenal player, will he play later in friendly match against Newcastle United? this can be a good way to value how good him in Arsenal because the other friendly their opponents are weak.
Nicolas Jackson is nowhere near consistent I don’t even consider him a complete striker because his finishing is poor. Manchester United needs a better option but considering their financial situation it would be difficult to sign that perfect striker seeing how much a perfect striker costs this days. Watkins could be less expensive and more effective for Manchester United than Nicolas Jackson could be.
Neither Jackson or Watkins are good options, it's better for Manchester United to wait for the next transfer window in order to get better striker. The task of Manchester United in this season is to survive and not relegated to Championship.