It's clear we lack some width very often and I think Roberto Mancini doesn't rate Scott Sinclair at all and if we'll want to use 4-3-3 then we have to sign 1 or 2 wingers. i have some time so here are some interesting names and none of them should cost more than 17M. I'll write numbers from their domestic leagues only:
Gerard Deulofeu, 1994, right foot, Barcelona B, 13G+3A in 20 matches, no WhoScored rating
Denis Cheryshev, 1990, left, Real Madrid Castilla, 8G+7A in 19, 0
Jesé Rodriguez, 1993, right, Real Madrid Castilla, 12G+5A in 20, 0
Arda Turan, 1987, right, Atletico, 4G+6A in 19, 7.11/10
Antoine Griezmann, 1991, left, San Sebastian, 3G+3A in 18, 6.94/10
Sofiane Feghouli, 1989, right, Valencia, 3G+A in 14, 6.83/10
Eliseu, 1983, left, Malaga, 1G+4A in 20, 6.82/10
Erik Lamela, 1992, left, Roma, 10G+1A in 17, 7.77/10
Marko Arnautovic, 1989, right, Werder Bremen, 5G+5A in 17, 7.23/10
Kevin Großkreutz, 1988, right, Dortmund, 1G+2A in 15, 6.79/10
Jefferson Farfan, 1984, right, Schalke, 5G+5A in 16, 7.75/10
Julian Draxler, 1993, left, Schalke, 4G+1A in 17, 7.06/10
Heung-Min Son, 1992, right, Hamburg, 7G+1A in 18, 6.99/10
André Ayew, 1989, left, Marseille, 7G+4A in 21, 7.32/10
Alexandre Lacazette, 1991, right, Lyon, 1G+5A in 18, 6.98/10
Dries Mertens, 1987, right, PSV, 8G+11A in 17, 0
Dusan Tadic, 1988, right, Twente, 8G+11A in 20, 0
Maxime Lestienne, 1992, left, Club Brugge, 10G+7A in 21, 0
Gerard Deulofeu, 1994, right foot, Barcelona B, 13G+3A in 20 matches, no WhoScored rating
Denis Cheryshev, 1990, left, Real Madrid Castilla, 8G+7A in 19, 0
Jesé Rodriguez, 1993, right, Real Madrid Castilla, 12G+5A in 20, 0
Arda Turan, 1987, right, Atletico, 4G+6A in 19, 7.11/10
Antoine Griezmann, 1991, left, San Sebastian, 3G+3A in 18, 6.94/10
Sofiane Feghouli, 1989, right, Valencia, 3G+A in 14, 6.83/10
Eliseu, 1983, left, Malaga, 1G+4A in 20, 6.82/10
Erik Lamela, 1992, left, Roma, 10G+1A in 17, 7.77/10
Marko Arnautovic, 1989, right, Werder Bremen, 5G+5A in 17, 7.23/10
Kevin Großkreutz, 1988, right, Dortmund, 1G+2A in 15, 6.79/10
Jefferson Farfan, 1984, right, Schalke, 5G+5A in 16, 7.75/10
Julian Draxler, 1993, left, Schalke, 4G+1A in 17, 7.06/10
Heung-Min Son, 1992, right, Hamburg, 7G+1A in 18, 6.99/10
André Ayew, 1989, left, Marseille, 7G+4A in 21, 7.32/10
Alexandre Lacazette, 1991, right, Lyon, 1G+5A in 18, 6.98/10
Dries Mertens, 1987, right, PSV, 8G+11A in 17, 0
Dusan Tadic, 1988, right, Twente, 8G+11A in 20, 0
Maxime Lestienne, 1992, left, Club Brugge, 10G+7A in 21, 0