Defoe finally completes move to Tottenham
Defoe agreed terms to rejoin the club he left just over a year ago earlier in the week and was paraded to fans ahead of the Carling Cup semi-final first leg victory over Burnley - but the paperwork was not filed immediately.
There were a number of issues that was reported to have hindered his move, but the Premier League now have the 26-year-old's registration and he is free to play at the JJB Stadium this weekend.
"We are delighted to welcome Jermain back to the club," said Chairman Daniel Levy, who had only let Defoe go to Pompey as his contract was running down and he needed regular football.
"We had previously been keen for Jermain to sign a new contract to extend his initial stay but at that point in time he felt it was in his interests to move on in order to guarantee himself more starts.
''I know the club is close to his heart and that he is thrilled to be back and to once again link up with Harry."
Defoe credited Harry Redknapp and the club's fans as the key reasons for his return to White Hart Lane from Portsmouth and revealed how Spurs supporters have been asking him to return ever since he made the move to Fratton Park.
''It feels crazy,'' he said. ''Since I left I've been getting texts and everywhere I go I bump into Spurs fans - it's just great to be back.
''The fans were probably the main factor. I spoke to my cousin and he said 'the fans love you there'. For me it is a strange feeling.
''When you get that many fans who appreciate what you do, it's hard to find words how I feel about it. I want to start afresh, like it's the first time, and hopefully score a lot of goals.''
Redknapp has hinted at using Defoe in attack with Roman Pavlyuchenko.
"This is the third club I have signed him for," added the Spurs boss. "Because I know what a top class player he is as well as a proven goalscorer. I am pleased to have him here and I am sure the supporters are looking forward to seeing him back in a Spurs shirt."
The deal is valued at around £15million, with the delay occurring as Spurs were entitled to an sell-on fee, even though they were also the club buying the player.
Levy is understood to have written off the money Portsmouth owed Spurs for the signings of Pedro Mendes and Younes Kaboul to appease the Fratton Park club.
Defoe had told Pompey boss Tony Adams that he wanted to return to White Hart Lane, which started the process of his transfer.
''Tony made it clear he didn't want anyone here that didn't want to fight for the cause,'' Pompey chief executive Peter Storrie said on Sky Sports News.
Pompey are hoping to use some of the money to bolster their squad with up to three permanent additions and two loans.
''We know our replacement and targets and we are working on them now,'' Storrie added. ''You will hear about them shortly, we hope to do something early next week.''
Storrie and Adams are set to discuss whether they will make an increased offer for Middlesbrough's Gary O'Neil, after an initial approach was rejected.
''It was what we thought was a reasonable price,'' Storrie added.