Celtic boss Martin O'Neill has reiterated his desire not to lose any more key players during the summer transfer window amid interest in Arne Engels and Alistair Johnston.
Source: [Sky Sports](https://www.skysports.com/football/news/12040/13568787/celtic-transfer-news-martin-oneill-admits-he-doesnt-want-to-see-more-of-his-stars-leave-as-arne-engels-and-alistair-johnston-generate-interest)