Jonny Evans
Evans suffered the strain in the first half of United's 4-3 Champions League defeat at FC Copenhagen, and he joins a lengthy injury list at United, who remain without defenders Lisandro Martinez, Luke Shaw, Tyrell Malacia and midfielder Casemiro.
The 30-year-old Northern Ireland international will join Leicester for 3.5 million pounds ($4.7 million), which will be paid in two instalments, both the BBC and Sky Sports reported.