By Jude Summerfield Erik ten Hag says he knew regression at Manchester United was possible in his second season after a positive first campaign at Old Trafford. The Red Devils ended a six-year wait for a trophy in 2022/23 as they claimed the Carabao Cup and finished third in the Premier League after a dicy start. However, Man Utd currently sit in ninth position ahead of Sunday’s clash with Tottenham Hotspur, who are eight points ahead in fifth, and are out of Europe after finishing last in their Champions League group before Christmas. Ten Hag said: “I knew this could happen. You need time to …