(Loan : Portsmouth – Hartlepool United)
The Blues winger has joined League Two rivals Hartlepool until January.
It’s been a difficult start to life at Fratton Park for the former Accrington man, who picked up an injury in pre-season and has struggled to make an impact since then.
After making his debut in the Johnstone’s Paint Trophy defeat at Exeter, the 23-year-old has made six appearances in total but has started just two of those games.
He made a substitute appearance in last weekend’s FA Cup victory over Macclesfield but Cook maintains a loan