The former Canadian Major League Soccer (MLS) side Vancouver Whitecaps defender will join the Red and Golds in a bid help his new team win an eighth successive CFL title, which starts next month.
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It is understood that it was his compatriot Willis Plaza, who himself recently signed back on the recommendation of newly-appointed coach Khalid Jamil helped put forward the 29-year-old's name to the East Bengal management.
Mitchell last turned out for San Juan Jabloteh in the Trinidad & Tobago Pro League. His only experience plying his trade in Asia came in the form of his spell at Korean second division side Seoul E-Land between 2015 and 2016.
Both Plaza and Mitchell are expected to arrive anytime next week ahead of Jamil's proposed preseason training camp at the club ground from 16th July. Jamil, who himself flew back to his native Mumbai on Friday from Kolkata recced the infrastructure at the club ground and the Kalyani Stadium.
East Bengal were dealt a blow in their attempts to land forward Victorino Fernandes. The 28-year-old has been claimed to be tied down with Sporting Clube de Goa for the Goa Pro League even though he has kept his options open in going into the Indian Super League (ISL) player draft later this month.
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Meanwhile, Abinash Ruidas found himself in a sticky situation with club officials asserting that the winger still had a further two years left on his contract. However, the former Atletico de Kolkata player believed his time at the I-League club was up as he was looking forward to putting his name into the ISL draft. The state of affairs still appears murky with the player's representatives and the club engrossed in a constant tussle.
In other news, arch-rivals Mohun Bagan wrapped up the signature of Ricky Lallawmawma from DSK Shivajians. The 25-year-old fullback first appeared for Aizawl FC in the 2016 I-League but did not get much game time under Dave Rogers after his switch to the Pune outfit.
The Green and Maroons also extended former skipper Shilton Paul's contract by another season. The goalkeeper will effectively be third-choice for Shankarlal Chakraborty's side behind new signing Soram Poirei and Shibinraj Kunniyil.