Kilmarnock have signed Josh Magennis and Tope Obadeyi, a former England under-20 international, on three-year contracts.
Left-winger Obadeyi, 24, started his career with Bolton but made only four appearances and went on a succession of loan moves, including a year in the Portuguese top flight with Rio Ave.
Magennis was released by Aberdeen in the summer after playing 123 matches in four years at Pittodrie.
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The Northern Ireland international scored 12 goals for the club and made most of his appearances from the bench, playing up front, on the wing and at right-back. The 23-year-old ended last season on loan at St Mirren, failing to find the net in 13 games.