Kent is looking to rekindle his fledging career in the Championship at Bristol City and Johnson believes his performances for Barnsley a year ago suggest the winger can cut it in the second tier of English football.
Kent had been expected to spend the campaign in Germany with Freiburg, but the 21-year-old was given just 244 minutes in the Bundesliga during six appearances.
Kent started just one Bundesliga game during almost five months at the club and was recalled by Liverpool earlier this month.
But with first-team opportunities proving hard to come by, both clubs made a decision to terminate the deal and he is heading for Ashton Gate.
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Kent becomes the second youngster to leave Liverpool on loan this week following confirmation of Matty Virtue's loan move to Notts County until the end of the season. "The position that the team is in at the moment, you'd be stupid to think we couldn't get promoted to the Premier League".
Kent, who enjoyed an impressive spell in the Championship with Barnsley last season, becomes the second player to arrive at Ashton Gate from Merseyside this week following the permanent signing of Liam Walsh from Everton.
He told the club's official website: "I'm really excited to be starting at Bristol City".