The Reds manager took over the reins of the Merseyside outfit from Brendan Rodgers in October following a stalemate in the derby at Goodison Park.
Klopp didn’t make any big-name signings in the January transfer window despite being linked with a host of big names like Mario Gotze, Marco Reus and Robert Lewandowski.
Liverpool have struggled to find consistency under the former Borussia Dortmund manager, although the Reds have won four of their last five games in all competitions.
Speaking to Newstalk ahead of Liverpool’s 2-0 win against United, Giles explained how long it will take for Liverpool to find consistency under Klopp.
“Liverpool, when they do play well, they’re really good. It is getting that consistency that you want,” Giles said.
Giles added: “It will take two transfer windows because all managers have a vision in their head of how they want to play. You need the players to fulfil the vision.
“He hasn’t got them because he has inherited the players.”
The Reds lost their first final under Klopp after Manchester City secured penalty shootout glory over the 18-time English champions at Wembley in the Capital One Cup final.
MORE: Latest Man Utd news
MORE: Latest Arsenal news
MORE: The latest football news