The emergence of Kalvin Phillips and Ronaldo Vieira has certainly eased the pain of Cook's absence.
The New Zealand striker felt sorry for his young team-mate.
The young Leeds midfield duo have been making waves this season.
Leeds United duo Kalvin Phillips and Ronaldo Vieira played against Liverpool in the EFL Cup on Tuesday evening.
The Millers midfielder is recovering after a strong tackle from Kalvin Phillips.
Leeds have made a bright start to the season, and there appears to be plenty of optimism around Elland Road.
Kalvin Phillips has won the EFL Young Player of the Month award for October.
The 20-year-old is looking a pair of experienced Whites stars.
Phillips has endeared himself to Leeds supporters this season, but has made a controversial choice.
Leeds United lost to league leaders Newcastle United on Sunday.