Valverde learns pretty quick to know which players deserve or don't deserve to play.
Arda-Shambolic during preseason, was subbed off during the Nastic training game and hasn't played a minute since then.
Vidal-Obviously Had more time with the team than Semedo since he is new, but his preseason wasn't good either. Got exposed big time vs Real and since then Valverde opted to use Roberto at RWB for the first 60 mins in the second leg of the Spanish super cup and Semedo came on and impressed earning him a camp nou start in the La Liga opener and he easily cemented himself as the better RB. Vidal was brought on as a winger and a good chance Valverde may use him there more than RB.
Gomes-didn't go on tour with the team for preseason in the USA, played 20 mins with Nastic and didn't really do much in that game. played a full game in the Spanish Super cup vs Real in the second leg and like most of the time he was shambolic. Valverde probably not only didn't like what he seen in that game from him but in training he also seems to be lacking as well.
I can see Vidal getting a game here and there at RB and Winger, but Semedo obviously playing the most games in the RB spot. Gomes? no idea whats going to happen with him, Roberto and Rakitic right now are easily ahead of him in the midfield department along with Iniesta and Busi.
Arda though? that dude is on Valverde's shitlist without a doubt. Valverde would rather use Paco as a RW/LW than Arda and Denis and Deulo being ahead of him as well. can't see him getting a game for us any time soon or even never again if he stays.