The 28-year-old was being chased by a number of Championship clubs and Cardiff were thought to be one of the front-runners, but they have chose to go elsewhere for their midfielder.
Leeds United new boy Adam Forshaw has insisted that joining a club of the Whites' size was a no-brainer of a decision and pointed to the amount of times the club are shown live on Sky as evidence of their importance.
Cardiff City were also interested in Forshaw, but signed Marko Grujic from Liverpool on loan for the rest of the season, so have ended their interest in the Boro player.
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But he said was doing so for the "last time" to give USA and European negotiators a "last chance" to enact measures to fix what he called the deal's "disastrous flaws". "They are being promised that sanctions will be lifted if they give up their nuclear program".
Forshaw becomes United's fifth new signing of the January transfer window, notably following swoops for Belgian left-back Laurens De Bock from Club Brugge and Japan worldwide midfielder Yosuke Ideguchi from Gamba Osaka.
The 26-year-old moves to Elland Road in a deal worth £4.5m and has signed a four and a half year deal, running until the summer of 2022.
Forshaw told the YEP: "I'm so excited".
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Creators Keyser and Lippman also launched a short-lived spin-off show, Time of Your Life , that followed Love Hewitt's character. The series starred Scott Wolf as Bailey, Matthew Fox as Charlie, Neve Campbell as Julia, and Lacey Chabert as Claudia Salinger.
Forshaw, who joined Boro for around £2m in 2015 and played for the club in the Premier League last season, has made 79 appearances and scored two goals in all competitions while on the books at the Riverside. Eunan O'Kane is suspended for the next three games following the red card he picked up in last weeks defeat to Ipswich, and Ronaldo Vieira is fighting to be fit after missing the last three league games with a knee injury.
"There's every chance", said Forshaw.
Met Office warns of more heavy snow and 'cut off' rural areas
In the Highland Council area, almost 150 schools and nurseries were shut or partially closed, affecting 15,000 pupils. Similar warnings are also in place for parts of Wales, the Midlands and southern England until 11am on Wednesday.